1940 Four cylinder motorcycles -until 40'- WANTED

We are interested to buy antique motorcycles (restored or in good original condition), specially:

-All Motorcycles with 4 cylinders built up until year 1940.
-All Pre-war BMW models.
-BMW motorcycles until 60' (more than 350 cc)
-MV Agusta 750 S and Münch Mammut.
-Indian, Harley Davidson, Vincent HRD, BMW, Brough Superior and FN with 4 cylinders.
- BMW R-75 and Zündapp KS750

If you are interested to sell some of them, please contact me and send me by e-mail: pictures, information and price you ask.
Thank you very much.