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Back around 1990 I attended a Gulf Coast Conservation Assoc. banquet and after being over-served I bid on and won the below art pieces. they are titled Back Country Grand Slam and Flats Grand Slam by well known artist Mike Stidham. They have matching numbers 0f 74 out of a set of only 100. The unique part is on the back of one are pencil sketches of 3 flys with original signatures by no other than Lefty Kreh, Al Phleuger and Harry Spear. Spear was a renowned Keys guide who now owns Spear Boatworks; we know the other 2 of course. Has anyone ever seen these before?
I now plan to frame the signed sketch to display along side the other 2. What are the 3 flys depicted?
Thanks

Not a flats guy, so no help here. Nice acquisition though. Good luck,