I have recently come across what I believe to be an unbelievably rare find. I have in my possession a Minolta Tele Rokkor-QF 25cm f/4 lens, yes f/4 not 5.6. (It is marked 25cm, not 250mm) From what little I have found it seems to be a VERY rare, limited production lens and likely made prior to 1960, however I can find nothing else but that. I had my camera guy look it over and he rated the external condition an A- with the glass being perfect. However, he couldn't give me a value, he just told me to be careful in selling it and not to take the first offer. Does anyone here have any information on this lens? Maybe even a possible value? Anything would be hugely appreciated! Thanks in advance!