Pre 1950s rides of LFGSS: old bikes, vintage rats, classic lightweights

I messaged someone who knows a lot about vintage hubs. His reply was

The air hole/spoke hole pattern looks like B.H. Airlite The "dust
cap" looks like F.B./Campy And it turns out that I don't know where
F.B.s were manufactured. Gnutti is still in business, using the same
logo, 80km from Milano.
Measurements and better photos of the stampings would help.

Any chance of the requested "Measurements and better photos of the stampings" ?