value on rolleicord vb

I have been left a 1960's rolleicord vb camera in mm uncles will, it
has been used about 5 or 6 times in its life and is unmarked with the
original unmarked leather case and strap, it has a
schneider-kreuznach zenar 75mm 3.5 lens which is the silver front and
the front has franke and heidecke written on it, the serial number is
2631349.

Any help on its value and where to sell it in britain (scotland) would
be much appreciated, i cannot give it the use it deserves and could
put the funds towards a new 35mm slr to replace my ageing pentax s1a.

thanks

Andy........