I finally found a windage arm that appears not to have been installed, there's no serial number/s and no wearing marks at the pivot etc. Top side has D.P. at the pin, and underside has a small but clear broad arrow EFD. Its so tight,clean and with sharp edges on everything that I'd easily say its NOS.
I want it for a project rifle but not with that black top side, and then it occurs to me that I've never ever seen an all black sight arm on a no1mk3. The blacking is high quality, thick and has quite a rich gloss in places. The only place I've seen similar is on good parker hales that have been refinished and on the trials rifles, no1mk6 and no1 mkV.

Before I take that black top off, is there any chance I've got some irreplaceable part that needs preserving?
Anyone know what EFD enfields might have had an all black sight?
Just being cautious, enfields=never say never ....
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