Links

sampleslabs.com Although it was last updated in 2006, sampleslabs.com is still the best online source on sample and related slabs.

samplecoinslabs.com Blogger Alan Canavan took the lead in sample research in 2011 and 2012, publishing several informative articles on samples.

eBay The main venue for sample sales.

kittlecoins.com Among the dealers who handle samples, Mike Kittle is the most knowledgeable.

Errors and More Jim Cauley's Errors and More is especially strong in the ANACS club and show slabs