I've always thought I had a Dekef Mountain but I can't be sure of purchase year therefore it could possibly be a Generation. What are the defining differences for me to be sure?
The Mountain has a fillet brazed seat/top tube joint and open seat stays.
The Generation is fully tig welded with closed seat stays.
The Team/Team SL/853 have fillet brazed seat/top tube joints and plugged seat stays.
There are further differences for other models, so a pic or two would help (and serial number).
Why thank you, a man of estimable taste. In which case you will no doubt appreciate the hammerite cover-ups to the various paint defects such as the non-drive chain stay.... Looks like a fresh application may be required.