I'm pretty certain its the original fork: the crown reinforcements down the inside of the fork blades look identical to Pogs I've seen on the net (see on CR Pog #7609 which is a road frame but has the same drilled extensions). It is deceptive in my crummy photos because the tire is dead flat, but the clearance is very tight. Repechage is right about the Weinmann 500 having the pads all the way up and still not addressing the rim very well. Somebody took a 1/4" drill to the brake arm, then must have chickened out because there are four divots drilled in the arms; a kind of half-hearted (& assed) attempt to lighten a ridiculously light caliper.
I ordered tires today. Hee-hee!
The bike came with a spare rear wheel (Campy Record track hub) , which my darling daughter has claimed for her Lejeune.
I'd like to find an Ambrosio (or similar) track bar & stem from the sixties to replace the handsome but inappropriate Cinelli road set-up it currently wears.
Here are a few more pics.