1 lx 2 weeks ago NFI.A flat-top with a strange Gretsch badge and mysterious serial numbers on top of the headstock. The seller says that it came originally with a tailpiece and he changed it over to a standard bridge. Pretty decent sound too. I thought there was a four digit serial number on top (which, if I'm reading Ed Ball's '50's Book correctly would put this at 1949) but I think the last digit is an "s." I've no idea what the large "2" is. Gretsch did make a round soundhole special order option on the Model 50 and 100 archtops in the '30's (still waiting to see what Paul Pigat is playing) but there are no catalog shots of a flat-top with tailpiece. The body shape certainly looks like a Gretsch of the era -- maybe like a Model 40 Hawaiian. And there's that badge. Maybe this is the first time Gretsch used a headstock badge?