Gentle fellows, I have recently purchased a lens which came on a lens board about which I ignore everything. I would like to resell it, but I don't know under which brand/make I should advertise it. The size is more or less the same as a Linhof 4x5'' so I believe this is also for 4x5'' (the hole looks big as it is for copal 3 shutters). Does anyone perhaps have clues? Thank you very much.