I’ve got a set of Dura Ace 7600 L/F on Velocity deep V rims unused, still got the boxes for the hubs and the dust seals. Are they too modern for what you want? Pricey mind!
I’ve got a front Campag Pista Sheriff Star on Lamda rim but would need to find the rear obvs. That won’t be as pricey as it doesn’t owe me lots.
Think I’ve got a couple of older track wheelsets hanging up but may be 27” rims.