By way of a difference these early hinges weigh around 695g as opposed to 394g for the later type. As can be seen from the photos, they have suffered a bit in use with a few dents and scrapes, but bearing in mind they were fitted to a working vehicle. The galvanising has worn off on some of the surfaces. It would be worth having them properly galvanised to bring them up to original standard.
These are quite rare items.