This of course is the problem with W/F coils. They aren't worth expertising but they have enough value that they are commonly faked. I am trying to learn. I would like to sell some of these with some confidence that they are real, otherwise, I feel like they should all be destroyed but the hoarder in my soul balks at that idea (besides the initial cost).
Here it is... a presumed 348 perf 12 vertical coil. Watermark is correct and the stamp is 25 mm high.
What do you all think?
Thank you in advance!