Forum des Musikinstrumenten-Museums Markneukirchen

Thank you Mario. More or less what I expected, but at least I now have some useful information.
Regards
Tony

Hilfe! Please look at my post of 30 August 2016. There have been over 100 views but no reply. Someone must know something about the likely origin of this instrument. I would appreciate any comment that anyone can make.

I have an old and damaged rotary valve trumpet as in the pictures. On the bell it says 'Schuster & Co. Markneukirchen' . Can anyone tell me anything about it, especially when it was made and whether it has any special value?
Tony Hughes, Oxfordshire UK