The shop was Grays they said for 20 to 150 for the F dependant on state of it and 75 upwards for the F2A, problem is im in Oz tand they are in the UK which is where Dad orignally brought them. So as you can guess he was a keen photographer and i have heaps of lenses, extension rings, bellows plus a black FM of mine and a F301. Oh and an old Western meter!!