Sights for sale

[Whitpusmc 0]

If this is a violation of the rules please delete. I do not  know this seller nor am I in any way related to this seller.

Someone was looking for a Johnson sight and there are two left on EBay. 
 

https://www.ebay.com/itm/Johnson-M1941-model-NOS-WW2-rear-sight-/363489381643?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=711-127632-2357-0

I don’t know if these are truly NOS but I bought one (there were three) with the intention of making a larger peep hole in it and saving my original sight. I welcome opinions from the experts here on its status (real vs repro)