It would be interesting to know if the date code on the earliest documented Serial toggle as noted on wiki by the owner and member KCB,if the A-3 code is under the plate or if his is even earlier.This would really be another game changer. His serial toggle is a complete and un used set and also interesting to do a trace of sorts on where some of these serial toggle came from like region,stores etc..I have a connection to the region written on copierguys warranty card and will describe my thoughts and the facts of what i know and can also trace the toggle i received as a gift for holiday from the same city/suburb.. forthcoming.... It will get interesting for sure!