Here is a link to an ebay listing for a De Rosa track bike. Seller in Australia must be confident in what he's got because he's asking over $4000 for it. Here's what I see:
1) The seat stays are rounded. Every De Rosa bike I have seen have flat tips by the seat cluster. From about 1970 on they would be stamped with De Rosa or sometime in the mid 70's stamped with a heart.
2) Seller includes a picture of the bottom bracket shell. Here it is stamped DE ROSA and again, I've never seen "DE ROSA" stamped on the bottom shell. In the 70's they all had cutouts - sometimes slots, sometimes hearts.
3) Also evident in the bottomshell photo, there is no chainstay bridge at all - none. Never seen a bridgeless frame before - and on a track bike where stiff and strong is key?
What do you guys think? The seller has no idea what he has because he originally listed it as a 1980's bike but its got 1970s stickers. I don't think its a De Rosa at all.
https://www.ebay.com/itm/33424431565...oAAOSwb4RhraO-