Interested in information on the following propellor

[WirralNick]

Hello, have been following with interest and wondered if the identification of the following was possible:

TRACTOR
D2635
P2500

2658

G1393 no.46
150 HP BRI
DRS No. 123640RH

I was led to believe that this was a Sopwith, however the pitch and D don't appear aligned - what are your views please?

[Dbahnson]

The drawing number doesn't make sense, so I think that the "12" prefix is actually an "LP" (Lang Propeller) prefix and that "3640" is the actual blueprint number. If that's the case it was designed for use on the Sopwith Camel (F1 and F2 versions) using the Bentley BR1 engine (150 HP).

Can you post a photo of the entire propeller?