1978 Topps/Zest Soap #4 Willie Montanez (Mets)

The 1-1/2 inch plastic coins, almost the same each year, came in many colors with several rare and perhaps even 1-of-1, making a "master" set almost impossible. Add in the variations and you can imagine the task.

See sportscollectorsdaily for great 1955,1959 & 1960 Armour baseball coins article.

T-206 Honus Wagner tobacco cards have sold for upto $2.8 million in auction. The "Holy Grail of Sports Cards", it's extreme-high auction value can mostly be attributed to great PR and "auction fever". It's not close to being the rarest baseball card and Honus Wagner is not Babe Ruth or Mickey Mantle. Yes, the T-206 set is beautiful & special but because of the # of cards and scarcities, few collector's try to complete, which should keep auction competition down compared to say 1933 Goudey or 1952 Topps baseball card issues.
BUT IT DOES NOT...

There's a story Wagner banned his card because he was anti-tobacco but there are other stories about financial considerations.

You surely have heard of PSA and may even know that this card was the FIRST they ever graded. But did you know that dealer (B.l. .ast.o name encoded) admitted tampering with the card, perhaps having it trimmed down to size, before PSA graded it so highly for the auction.