Chris Mcloughlin said he unearthed this coin when he was detecting in Cornwall. It’s obviously a coin of Elizabeth I but one of the larger denominations.
It’s a shilling, examples of which turn up much less frequently than the small denominations struck for Elizabeth I. The mint mark on both sides is a letter A, which dates the coin to 1582-74.
The obverse would grade Fine but there are two gouges to the surface and some scratches. The reverse is better and would grade good Fine. Unfortunately, the defects on the obverse would have a significant impact on the value of this shilling. Without the defects my valuation figure would have been higher but with them I’d say that this coin would be worth no more than £50.