i think you can find them from 53 to 67. I have several. Trying to get one for each of my sets. Anthony, Griffins on the board, has a great run for both Topps and Bowman. If you keep a search for Topps or Bowman Salesman sample, you will find them on eBay, usually partially cut like this one. They are most valuable if the 3 card strip is uncut. The next factor involves whether a star card is pictured on the strip. Less valuable is a star on the back. The backs do not usually match the front players. Two card backs are advertising with one player back from the set. Here is back of my 59 Salesman Sample
