Collectible Value Guides
In-depth, practical guides to working out what collectibles are really worth: identification, condition and grading, spotting fakes, researching sold prices and choosing where to sell.
- How to Value Coins — A practical guide to working out what a coin is worth: identification, mint marks, the 70-point Sheldon grading scale, bullion melt value, key dates, errors and when to use PCGS or NGC.
- How to Value Sports Cards — Learn how to work out what a sports card is worth: identifying the exact card and parallel, judging centering, corners, edges and surface, PSA, BGS and SGC grades, and reading sold comps.
- How to Value Comic Books — How to work out what a comic book is worth: comic book ages, key issues and first appearances, the CGC 0.5 to 10.0 scale, label colors, restoration, newsstand editions and sold comps.
- How to Value Vintage Toys — A guide to valuing vintage toys and action figures: why original packaging matters, MIB and loose terms, completeness, reproduction parts, paint and play wear, and finding real sold prices.
- How to Value Stamps — A careful guide to valuing postage stamps: identifying stamps with catalogue numbers, perforations and watermarks, judging centering and gum, mint versus used, covers, and expert certificates.
- How to Value Jewelry — How to estimate what jewelry is worth: reading hallmarks and karat stamps, gold-filled versus solid gold, melt value, diamond and gemstone basics, signed costume jewelry, and the different kinds of appraisal value.
- How to Value Antiques — A practical guide to identifying and valuing antiques: what counts as an antique, dating furniture and ceramics from construction and marks, condition and originality, reproductions, and how to research real prices.
- How to Spot Fake Collectibles — A practical checklist for spotting counterfeit and altered collectibles: price red flags, materials and weight, printing under magnification, UV light, verifying certificates and grading-slab numbers, and buying safely.
- Collectible Grading Scales Explained — A side-by-side explanation of how collectibles are graded: the Sheldon 70-point coin scale, 10-point card and comic scales, stamp centering grades, video game grading and Goldmine record grades, and why grades move prices.
- Where to Sell Collectibles — An even-handed comparison of the main ways to sell collectibles: online marketplaces, specialist platforms, auction houses, dealers, consignment shops, shows and local sales, with the trade-offs in price, speed, fees and risk.
- How to Research Sold Prices — A step-by-step method for researching what collectibles actually sell for: using completed sales instead of asking prices, matching condition and version, handling outliers and best offers, and adjusting for time and fees.
- When to Get a Professional Appraisal — When a professional appraisal is worth paying for, the difference between insurance, fair market and liquidation value, how appraisers charge, credentials to look for, and how to prepare your items.
- How ValU Estimates Work — A plain-English explanation of how ValU produces a value estimate from a photo: identification, comparable sales, ranges and confidence, what affects accuracy, and what an estimate is not.
How we write these guides
These guides explain widely accepted practices from each collecting field, such as standard grading scales and identification methods, and say clearly where the answer depends on the specific item. We avoid quoting price figures that change quickly and we do not publish invented statistics or testimonials. Each guide shows the date it was last reviewed. Read more about our methodology in how ValU estimates work, and if you spot an error, please contact us.
Looking for shorter reads? See the ValU blog.