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At what point is there confirmation of a counterstamp. I know finding the counterstamp on a product is good.
I'm curious to know what is acceptable evidence to get from possibility, to probability, to certainty. I'm still pretty new to this.
Some thirty years ago, I purchased my first computer from Radio Shack, a Tandy. It gave me the ability to start building a database for my c/s collection which then numbered around 700 pieces. Presently, the collection is four times that amount and growing. As time progressed, I realized that I needed a simple way to highlight pieces that offered the best chance for a positive attribution. I opted for including a numeric "PROOF" field, ranging from 0 to 4, as follows ....
0 - PUZZLER - A c/s with virtually no chance of attribution (e.g. - random numbers or letters)
1 - POTENTIAL - A c/s that has minimal evidence for attribution (e.g. - only a surname)
2 - POSSIBLE - A c/s for which there are two distinct suspects (e.g. - two contemporary individuals with the same name, initials)
3 - PROBABLE - A c/s for which there is a likely attribution (this, given credible circumstantial evidence)
4 - POSITIVE - A c/s that is attributed (this, by virtue of conclusive evidence)
The attribution of c/s's is, in effect, like a court judgment, a conviction, given the weighing of evidence. When assessing c/s's, there's much evidence to be considered or weighed. There's the font size, the inclusion of accompanying stamps (e.g. - town or address, occupation), multiple name stamps, pictorials, style (smith's hallmarks, logo stamps) and name clues (e.g. - uncommon surnames, initials).
I'd humbly suggest that reading my c/s posts and comments on the subject, you can see and study many pieces that are PROBABLE and POSITIVE; this, that you may judge the evidence which differentiates one from the other. Offhand, I'd recommend the recent posting on the UNICORN stamp.
My one criticism of the Brunk and Rulau reference books is that they were too lax about demanding evidence from their many contributors. Also, they rarely distinguished between POSSIBLE, PROBABLE and POSITIVE attributions, what I call my "P-scale."
During my periodic phone conversations with Greg Brunk, he was onboard with my need to differentiate between these levels of attribution. That said, I understood and much appreciated the daunting task that Greg and Russ Rulau undertook in compiling their tremendous books on this and many other subjects!