As an owner of a couple of Olmo bikes now, I'll say, the lugs fit what Olmo used on a lot of its bikes. The seat cluster is like nothing I've seen on an Olmo, seat stay caps are usually long spoons or stays terminate into a Cinelli-esque treatment.
I'm thinking the fork could be a red herring. The "G" with an arrow end is unique. I thought at first maybe it was a lower-end bike like the Olmo Deluxe due to the seat cluster, but I'm pretty sure the Deluxe used a different lugset.
Interesting find, and worth the money if bought for 'close to nothing'. Headset could fetch you $50-60 all day long and the crankset another $65-100. Odd selection of parts, lots of French there. Curious, any threading stamps on the BB cups? What threading is the top nut on the headset?
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