Found old stamps and coins at home: Market value, condition, and on-site appraisal process in Hong Kong | Gu Jin Jian Bao

When renovating old tenement buildings or clearing out ancestral homes in Hong Kong and Macau, batches of old coins and stamps are unearthed every year. The most common questions are not "How much are they worth?", but rather: "Are these items still worth keeping? How do I tell genuine from fake? Where can I find reputable buyers?"

This article will clarify several things: the market value, key identification points, and storage taboos for several types of high-value collectibles most commonly found in homes (such as the Gengshen Year Monkey Stamp, Cultural Revolution Recalled Stamps, and Qing and Republic of China banknotes), as well as the complete process from on-site appraisal to cash settlement. The article uses market prices and practical procedures to give you a clear understanding before you get started.

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I. Among household stamp albums, these are usually the most valuable types

The most famous stamp in the old stamp buyback market is the 1980 Gengshen Year Monkey Stamp (catalog number T.46). It is not only China's first zodiac stamp but also a barometer for the stamp market over the past four decades.

1. 1980 Gengshen Year Monkey Stamp (T.46)

Designed by Huang Yongyu, the Monkey Stamp was printed using a mixed gravure and intaglio process, resulting in exquisite craftsmanship. Due to limited printing technology at the time, the yield rate was low, with only about 4.43 million qualified stamps issued. Most of these were consumed in daily correspondence, making original uncancelled stamps quite rare today.

Market Value Reference Table:

Collectible	Specification	Reference Price (RMB)	Converted to HKD
1980 Gengshen Year Monkey Stamp	Full sheet (80 stamps) with original gum	Approx. 1.3 million – 1.5 million RMB	Approx. 1.4 million – 1.62 million HKD
1980 Gengshen Year Monkey Stamp	Single unused stamp	Approx. 4,000 – 5,000 RMB	Approx. 4,320 – 5,400 HKD
1980 Gengshen Year Monkey Stamp	2011 Zurich Asia Auction Record	—	1,437,500 HKD (sheet)

Note: HKD exchange rate estimated at approximately 1:1.08. Actual transaction price subject to appraisal on the day.

2. Cultural Revolution "Recalled Stamps": Rare stamps urgently withdrawn due to political reasons

Besides the Monkey Stamp, stamps from the Cultural Revolution era that were urgently recalled due to political reasons or design errors represent another highly valuable segment in the collector's market.

• "The Whole Country is Red": Issued in 1968, it was withdrawn and recalled less than half a day after issue because the map outline did not mark Taiwan in red and the national border lines were inaccurate. The "Large Whole Country is Red" once fetched 13.8 million RMB (approximately 14.9 million HKD) at auction in 2018.
  
• "Black Inscription": Originally intended to commemorate Mao Zedong's inscription for Japanese workers, it was banned due to diplomatic considerations, with only a small number circulating. A single unused stamp has a reference price of 500,000 to 1 million RMB (approximately 540,000 to 1.08 million HKD).

If you have these recalled stamps, it is recommended not to unfold them too many times or keep them in ordinary plastic bags—once the gum adheres, the estimated value will be directly discounted. For detailed versions and market trends, you can refer to the Guide to Rare Chinese Stamps: 1980 Monkey Stamp, Red Maple, Cultural Revolution Recalled Stamps.

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II. Distinguishing Authenticity: Two Practical Tips

Once the market price exceeds one million, a large number of high-quality counterfeits naturally appear on the market. In practice, the following two points are quite reliable:

1. Core authentication points for the Monkey Stamp

• Intaglio texture: On genuine stamps, the monkey's fur strands are distinct. Under a 20x magnifying glass, the ink appears raised, and it feels noticeably three-dimensional to the touch. Most fake stamps are flat-printed, with blurry images and no three-dimensionality.
• Back ink residue: In those days, ink dried slowly, so when stamps were stacked, the back of a stamp often picked up black residue from the front of the previous stamp, distributed naturally. Counterfeit stamps often have overly clean backs.
• Gold powder details: Genuine stamps have gold powder on the eyes and nose, which glows with a yellowish luster. Fake stamps often have dull gray gold powder.
  

2. Key identification points for "The Whole Country is Red"

• Dot pattern characteristics: Genuine stamps are photogravure printed, and the halftone dots of the red map are circular with hollow centers. Most counterfeits are offset printed, with solid halftone dots.
• Paper quality and ink absorption: Genuine stamps use special stamp paper, which is firm and has good ink absorption. Most counterfeits use coated paper, which is glossy and reflects strong fluorescence under UV light.

If you extend similar identification logic to the overall market for rare stamps, you can also refer to the Guide to Rare Stamp Value and Buyback.

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III. Condition Grading: The Lifeline for Value

For the same stamp, the price difference between a perfect and a damaged item can be several or even tenfold. In practice, we refer to the international ASG and domestic CSIS and Yuantai grading standards:

Grade	Score Reference (CSIS/Yuantai)	Condition Description	Value Weight
Superb	97 – 99 points	Original lustrous gum, vibrant colors, no flaws under 5x magnification, centered design	100% (benchmark)
Extremely Fine (XF/VF)	90 – 95 points	Full original gum, vibrant colors, allows for very slight natural yellowing or tiny paper specks	80% – 90%
Fine-Very Fine (Fine-VF)	80 – 89 points	Overall intact, allows for slight soft creases, gum creases, or minor oxidation; back may be lightly hinged	50% – 70%
Good-Fine (VG/F)	60 – 75 points	Obvious creases, fading, thinning, or missing perforations, and other physical damage	10% – 30%
Repaired Stamp	Not graded	Artificially repaired (e.g., color retouching, cancellation removal, backing replacement), usually not of high investment value	Extremely low

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IV. Home Storage Before Appraisal: Four Things Not to Do

If you've just found old coins or stamps at home, the storage method before appraisal directly affects their estimated value. It is recommended to follow these principles:

1. Control temperature and humidity: Ideal temperature is 15 – 25°C, with constant relative humidity at 45% – 55%. Hong Kong and Macau have humid climates, so using a professional electronic dehumidifying cabinet is strongly recommended.
2. Strictly avoid bare-hand contact: The sweat and oils secreted by fingers are a breeding ground for mold. When viewing or moving collectibles, use professional stainless steel round-tipped tweezers.
3. Scientific storage: Stamp albums should be stored upright like library books. Strictly avoid stacking them flat, as long-term pressure can cause stamps and stock sheets to stick together, leading to irreversible damage.
4. Never attempt to repair yourself: If you find stamps yellowing or with spots, absolutely do not try to clean them with water or bleach them with chemicals—these actions will damage the paper fibers and gum, leading to a "Cleaned" label from grading agencies, causing a significant drop in value.
   

Similar logic also applies to old banknotes and silver dollars—for old banknotes, the judgment of banknote condition and serial numbers is also a key factor affecting the estimated value; if you still have old silver dollars, remember not to clean them.

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V. From On-site Appraisal to Cash Settlement in Hong Kong and Macau: Complete Process

The actual workflow in Hong Kong and Macau generally involves five steps:

1. WhatsApp Initial Consultation: Send clear photos of the front, back, and corners. Appraisers will first conduct a preliminary assessment and inform you of the approximate market range.
2. Appointment for On-site Visit: If the preliminary assessment indicates collectible value, a professional team will be arranged to visit at a specified time, free of charge in Hong Kong and Macau.
3. Physical Appraisal: Appraisers will bring high-magnification magnifying glasses, UV lights, electronic scales, and other equipment to evaluate the authenticity, condition, and rarity of the collectibles on the spot, and provide a quote based on current auction and spot market prices.
4. Immediate Settlement:After an agreement is reached by both parties, a formal Buyback agreement will be signed. Payment can be made instantly viacash, bank transfer, cheque, or designated electronic payment methods.
5. Strict Confidentiality: All client information and transaction details are kept strictly confidential.
   

If you also have silver dollars, old gold, or other miscellaneous items, they can be appraised together during the on-site visit. For detailed information on stamp Buyback and banknote Buyback, please refer to the respective category pages for detailed price ranges.

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Conclusion: Within an inch, get an appraisal before deciding what to do

Every old coin or stamp is a slice of history, carrying the imprints of its era. Family heirloom Monkey Stamps or accidentally discovered Cultural Revolution recalled stamps often have value beyond imagination; however, if not properly preserved or improperly repaired, their estimated value can significantly decrease.

If you have old items lying around in a corner of your home, don't rush to sell them to a gold shop or pawn shop. Get a free appraisal first to at least understand the market value of your collectibles before deciding how to proceed.

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Contact Information

Merchant: Ancient Coin Appraisal
Professional Buyback: Gengshen Year Monkey Stamp, Cultural Revolution Stamps, Old Commemorative and Special Issue Stamps, Qing and Republic of China Stamps, Gold and Silver Coins, Old Coins, Daqing/Republic of China Banknotes, and various antiques and collectibles.
WhatsApp/Phone: 98342057(Click number to chat directly, supports free online valuation, free on-site Buyback throughout Hong Kong and Macau)