well here is a 1944 British India 1 silver rupee with what I call a ghost 4 as it's barely seen I bought this from a small coin company for under $15 they say it's in XF condition sorry about the photos but they were taken with a old webcam and a LED desk light
The Missing 4 is because of a grease filled die. Common issue on worn die. Not really a major issue. Usually no premium for that. Silver melt value and age factor is neat though.
Welcome to CT. I like rupees too... that looks a lot like a filled die where points on the coin die get filled with debris and you don't see the character
I like coins that get my notice and this one did so I bought it yeah I know it adds no value but being an error coin minor at that it still had to get grabbed for my collection which has many error coins in it