I have currently purchased a 60 hour "Bunn Special" by Illinois off ebay. The watch was exactly as listed, and one thing about it caught my eye. It was marked sixty twice. Not spelled out, that is, but, as the picture should show, it is marked "MOTOR BARREL 60". I was wondering if anyone knows how rare these are, because I found one auction site that says it is one of 500 in total production, or TP as they put it. The serial number is 4,79*,***, and my Complete Price Guide to Watches says that it would be aproximatly 1925-26. Any info that I haven't posted would be helpfull.