Jay ... I can see now why you were selling some lenses off.
As you had multiples in several focal lengths.
So have you done away with all of your M42 gear for the older K-mounts???
I think you for selling some of your gorgeous M42s .. it has given me the opportunity to get into the M42 club
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Cheers Simon
Pentax K10D x2 : DA 18-55mm : FA50 f/1.4 : FA J 75-300mm : Genuine M42 adaptor x2
Tamron SP 90mm f/2.8 Di macro : x1.4 AF Teleconverter :
Sigma 28-70mm f/2.8 EX : EF 530 DG Super :
M42 Super Taks 28/3.5 : 35/3.5 : 55/1.8 : 85/1.9 : 105/2.8 : 135/3.5 : 200/4