In a batch of gear I received lately, there was a 150mm f4.5 Astragon lens. I know very little about it, but the aperture does appear to function correctly. It is on a lens board about 6" by 8". As I have not went beyond Medium Format yet, it is useless to me. Hence the low price on it. If anyone has any questions.. fire away. Paypal is ok, actual shipping to you, etc.