Hello,
I purchased weitwinkel euruscop vii no7 - and looking catalog (from 1890 I think), it should be 25 inch focal lenght..

After I got it - its about 13,5 inch - and based on same catalog - its most likely suplementary weitwinkel euryscop no7.

Any explanation available - confused because serie number 41 xxx gives year 1891 - about the same year as the catalog..

Not complaining -great lens - but would be nice to know why the difference or atleast confused at higher level..

Ps. Sorry - but Adding foto of the lens is too comlicated for me (or interface is...)