Possible 1845/3 HALF Crown ?

[ozjohn]

I decided to look at my 1845 half crown after seeing an example of a  1845/3 for sale. On this example the date seems to be double struck. Any thoughts?

[Rob]

The only example I have seen in hand which is completely unambiguous was the Adams coin. You will see that the underlying 3 determines the profile of the last digit  with the 3 clearly present, but also clearly overpunched with a 5 given the vertical section to the left on the upper part of the digit. I have seen various others which purported to be over 3, but none with the same profile and arguably contentious. The 1845 over ? that I had stolen at the Midland last year looked to be to be more likely over a different font 5 than a 4 or a 3, but 4 would be a good call if not a 5. Not to say that the coins with a taller 5 are not over 3, but definitely a case of caveat emptor IMO. 

There are many coins listed as such, but most are reliant on the vendor's description. There is one coin listed on ebay that I thought unusual which is claimed to be 5/3, but it was the irregularity of the date which caught my eye. https://www.ebay.co.uk/itm/335246363284