Free Auction Tracking Sheet with our weekly email.

Get it freePrivacy

Guides · Common Fakes & Counterfeits · Collectibles and antiques guide

Common fakes: collectibles and antiques

Reproductions copy the look, not the quality. Here's what gives them away.

General tips, not authentication. This is an estimate, not an appraisal. When in doubt, use a professional authentication service.

Most common fakes

How to spot them

  • Genuine Hummels have an incised M.I. (Maria Innocentia) Hummel signature plus a Goebel mark from the right period. Source: mihummel.org
  • Real Tiffany lamps use hand-cut, leaded, textured glass and good-quality bronze. Painted glass or sloppy solder means a fake. Sources: treasuresontrial.winterthur.org · pbs.org
  • Repro cast iron tends to show a pebbly surface, loose seams, soft detail and bright paint, and is often smaller than the original. Sources: mechanicalbanks.org · realorrepro.com
  • Repro porcelain signs often show bare metal inside the mounting holes, digital dot patterns in the printing, and rust that looks too uniform. Sources: antiqueadvertisingexpert.com · californiavintagebuyers.com

Tests you can do safely

Coming soon.

When to get it authenticated

Coming soon.

These guides are general screening tips, not authentication or appraisals. Sources are independent sites we don't control and aren't affiliated with. Sources checked Nov 2, 2026.

Let us do the homework

Bidding on a whole sale?

We identify every item, flag the standouts in the photos, and set a max bid on every lot.