"The building looks like some of the old pigeon lofts," or the old salmon fishing station at Newburgh/Port Errol, Aberdeenshire.Malky
The OP says that it's in the original print. If so, it must have been stuck on the neg (what size was the neg/plate) or is a genuine object or the original wasn't the original.
Quote from: Gadget on Thursday 29 August 19 00:07 BST (UK) The OP says that it's in the original print. If so, it must have been stuck on the neg (what size was the neg/plate) or is a genuine object or the original wasn't the original.Anything more or less opaque coming between the printers illumination source and the paper they were printing on would produce this result in exactly the same way as muck on your negative will end up as white spots on your print.