I own a slightly later one with that same fork - that bike on Mookie's site is one reason I found the chrome fork on the ebay bike possibly original. Also, one of the bulgier catalogs shows a chrome fork track bike - and the road bikes in that catalog lack the TT braze-ons, which helps date it. For '75-6, which is about where I place the ebay frame, I don't think 6-speed is out of the question. Mine is similar to this one on Mookie's site - same color scheme and braze-ons, but 1010B's, and sadly no hearts in the lugs (except the BB, which has two lovely ones). But I do know repechage generally knows his stuff, and there's the evident damage and weird (wrong) decals to boot.