Simplified Chinese · Traditional Chinese · English
COLLECTOR KNOWLEDGE
Collector questions: verify, protect, and compare
These answers help collectors prepare better questions before buying, selling, or requesting a valuation. They are educational only: a photograph, a certification lookup, or this page cannot replace inspection of a specific item.
What does a PCGS or NGC certification lookup confirm?
A certification lookup is a useful comparison step. Enter the number from the holder on the grading company’s official site and compare the returned description, grade, and available images with the holder and the listing. PCGS and NGC describe their tools as a way to verify certification details; NGC also notes that a result can show holder-related alerts. A lookup does not prove that every seller photo shows the same physical item, so compare the item, holder, and listing together before paying.
Can a coin or banknote be authenticated from photographs alone?
Photographs are valuable for an initial screen, especially when they show both sides, edges, holder labels, serial numbers, and visible flaws. They cannot reliably reveal every physical characteristic. Weight, dimensions, edge treatment, surface texture, paper, ultraviolet features, and possible alterations may require direct examination or an appropriate specialist. For a high-value purchase, ask for clear images, compare the listing with any certification record, and seek in-person or professional review when the remaining uncertainty matters.
How should collectible coins and paper money be stored?
Reduce handling and use separate protective enclosures. The Canadian Conservation Institute recommends protective holders for coins and stable, acid-free or inert storage materials for paper objects. Keep paper away from direct light, water risk, dust, adhesive tape, rubber bands, and poor-quality cardboard. The correct material can vary with the object, so fragile, mould-damaged, repaired, or unusually valuable paper should be assessed before a storage change.
Canadian Conservation Institute: storing paper · Canadian Conservation Institute: coins and medals
Should I clean a coin or flatten a banknote before asking for an appraisal?
No. Do not clean, polish, press, tape, repair, or alter an item before documenting it. Such work can change surfaces or paper and make later assessment harder. Photograph the item as found, note any visible issues, and keep loose material with the item where appropriate. If conservation is needed, ask a qualified conservator or specialist before attempting treatment.
What photographs help with a preliminary valuation request?
Include clear front and back images in even light. Add edge views for coins, close images of flaws, holder labels, certification numbers, and any provenance or packaging that belongs with the item. For banknotes, include corners, folds, serial numbers, and areas where paper condition is visible. State the quantity, country, denomination, date, known grade, and your city. A preliminary review may identify missing information; it is not a guarantee of authenticity, grade, or sale price.
How are combined shipping and high-value orders handled?
Shipping is calculated for the order rather than added once per item. Before payment, confirm the delivery country and any special packaging or signature needs. CBG COIN uses tracked shipping by default; orders of C$200 or more require a signature. Orders of C$1,000 or more are submitted as bank-transfer orders and ship only after funds are confirmed. The current order page, confirmation email, and trading policies govern a specific transaction.
Sources and editorial note
Reviewed 3 September 2026 by the CBG COIN Editorial Team. External links above are used to verify general care and certification-checking information. They do not authenticate or value any item listed by CBG COIN.