Hi,
I've been lucky enough to aquire a really nice Beolit 1000, with a black leather case. 
Is there any way I can date it from the type number or serial number ?
Are there any features to look for to find out whether it's an early or late model ?
I know they have quite a short production run, ( 1968 - 1972 ) but was curious to know if I could narrow things down a little.
Also are the instruction booklet/user guides still around for this model ?
Thanks in adavance
justin