Thought this might be of interest, looks like it has been recovered but it has the 'lavatory bowl' shape of an early Fed and the finer milling on the knobs
However no collimation hole on the back and no 'kick' in the viewfinder window but maybe would have been 'designed out' by now. (These are present on cameras in the 8000 range).
The lens looks newer, the milling is the later coarser type.
Not for me. I've now set myself the rule of nothing over s/n 10,000