Raleigh 350 SV JAP?

[Veper]

I have got an old motorbike. I like to identify its type and time of producing. Unfortunately I can’t do that at this moment.
Can you help me to solve this problem?
I think, the bike is made in England, because of some identifiers and the foot brake is on the left side.
The identifiers are following:
- On the engine:
YAP LONDON
REQ TRADE MARK
PATENT No 207967122
- On oil tank:
CONCENTRIC MFG CO. LTD. B’HAM
- On gear box:
STURMEY-ARCHER
I have got some photos, I send these as attached.
I should be glad to any information about the bike. Thank you for all your effort.


 

[Veper]

[Veper]

[33d6]

Hello,
That looks like a fine bike.
To identify it precisely we need the frame number and the engine number. The gearbox number could be useful also.
The information you have given us already doesn't help that much.
Look forward to the extra information.
Cheers, Bob