Are those Firs Campag or Shimano freehub and where are you please?
Mate, that's a screw on freewheel so it t'aint neither ;o). More than likely a BSC threading as opposed to Italian and 130mm OLN by the looks of things. Shame these aren't 32 hole drillings..
@Artful started
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Are those Firs Campag or Shimano freehub and where are you please?