You need to give us some more details about where this spacer was -- exactly. I've never seen a spacer on a Fujinon A lens, but they might be used on non-factory supplied shutters. What shutter do you have? How old is the lens? Is the lettering on the inside of the filter ring or on the outside of the barrel? How wide & thick is the spacer?
Is that actually an interior lens element spacer, or just an exterior shutter shim hypothetically for sake of too thin a lensboard? I'm not aware of any such spacers on the Fuji A series, which in my case, includes the 240 focal length. But please be more specific about your particular lens - inside or outside lettering?, shutter type?, lensboard style?
You need to give us some more details about where this spacer was -- exactly. I've never seen a spacer on a Fujinon A lens, but they might be used on non-factory supplied shutters. What shutter do you have? How old is the lens? Is the lettering on the inside of the filter ring or on the outside of the barrel? How wide & thick is the spacer?
Thank you very much for your help. The lens is like the one in the picture, with a thickness of about 1mm, but the diameter is unknown. I previously found this spacer at home, but a family member misplaced it. Now, I’m trying to figure out the possible options for this spacer.
Mine has the all black Copal shutter which, I believe, would indicate that mine is a slightly newer version.
I did have a thought, though... Over the years, I've had lens and lens board combos where the aperture ring "dragged" a bit on the lens board. Perhaps, someone added a spacer to mitigate this issue? And, two had to be added to maintain proper relationship between the front and rear components? Other than that, I can think of no reason why your lens includes these spacers.
Such a spacer has no relation to that lens itself. The two lens cells should simply tighten by themselves right into the shutter itself. Then the shutter should be held tight on the lensboard by its own threaded retainer ring, suited to the no. 0 opening on that Technika style board.
If the hole in the board is oversized, like for a no. 1 shutter instead, perhaps someone tried to compensate for the error with spacers. I dunno. But they don't belong with that particular lens.