Picked this one up at the Seattle Swap. 28" frame, seller said it was a Pierce, a friend of mine agrees, what do you guys think? Dropouts are not stamped and brazed on like other motobike frames I have, they transition seamlessly onto the chain and seat stays. Bearings are integrated into the frame (both head-set and bottom bracket). 2 Badge holes are spaced diagonally from top to bottom...Any thoughts or does anyone have one like this?