I am planning to sell my 43ltd when I have found a good replacement as I really don't use it enough and can get a really good price for it that will fund a few more M42s !
I have spotted these for sale locally (if you can call all of China local) !
SMC Pentax-A 1.7 50mm (US$120)
Contax CZ Planar T* 50mm 1.4 (US$270) (via T to PK adaptor)
CZJ Pancolar electric MC 50mm f1.8 (various US$100 to 150)
CZJ Tessar 50/2.8 (US$80)
SMC Pentax-A 2.0 50mm (US$80)
S-M-C Takumar 50/1.4 (US$95)
or maybe someone here has a great 50mm they can offer me at a competitive price ?
There is also this : Carl Zeiss Planar 1.2/55mm ........ however that would be a cool US$7,000 as listed !
Off on a completely different tangent the Tair 300/ 4 (US$270) or the Takumar 300/f6.3 (US$185) ?