This Bike was part of my collection and was restored a few years back before I got it in trade. The amazing original Large pro frame has been repainted it has no Dents dings or rewelds but had minor small chips in the pain here and their and at rear drops, see pics its beautiful!!! This bike does not have a serial that I can tell, it probably was refinished over when it was repainted and restored. Pleases look over all pics it really is a super nice example of a large pro in a great color combination that you won't see anywhere else. Please do not hesitate to ask be any questions, We do take trades sometimes. OG Diamond Back 100% Chromoly Koizumi Frame Handmade in Japan Large Pro with Longer Top tube. OG Diamond back 1979-80 Dual drop out forks OG Diamond back handlebars Chromoly stamped RARE White Diamond back seat Original Vintage Pro Neck Polished stem Original Vintage Minty Sugino Super Maxy cranks Silver Victor bear trap pedals Ame Waffle Grips with Checkered Donuts New White Comp III tires New OG ARAYA 7x rims with Suzue Hubs OG Silver fluted seat post New Two color Diamond Back Repro Two color pads Sugino blue Chain ring White Diamond back seat post clamp Dia-compe White Mx1000 brake set SE Chain tensioners Great looking a riding specimen. Please Email with any questions Ships in large box professiinally packed 90 percent assembled. Our feedback on bikes is impeccable. You get what you pay for. Pick up available also. Because of age etc. Sold as is no warranty and no returns or refunds but please check our 20 plus years of feedback.