Charles II Crown 1676 - Need Grade And Value. Thank You

I have a 1662 Charles 11 Crown in the same condition as this one, but with a small amount of scratched graffiti on the obverse. It came out of a dealer's junk box in the mid 1970's; I think that I got it for not too much above silver value.
Value wise, things have changed considerably since then, and I think it is now valued at some large multiple above silver value now, at around 65 Pounds.

On that basis, the coin pictured here (without the graffiti), would have value of around 100 Pounds. Unfortunately with this one, the last two date numerals are almost gone.