Sure, but that doesn't make it a Rec OR.
The absence of countersunk spoke holes makes me think it's a Centaur or Olympus (probably the same).
There's probably very little difference anyway, they is all good!
looks nice but what makes me wonder is the silver spacer, makes me wonder if it's a road hub converted to mtb with a longer axle and an extra spacer to make if fit an mtb, so it would look like a record hub but fit an mtb
I think the spacer's fine - all the Campag MTB hubs I've had had them.
Knowing Campag, they were more than likely much the same as their road hubs anyway, just with longer axles (+maybe bearing seals) - my Olympus rear is pretty much identical to same-period Chorus..
It seems silly that the folks at Serotta would have substituted a "lower quality" and out of date hub with the rest of this kit.
But debate on if you must.