Old silver from the sea

gday,not too much from this weeks couple of hunts but did get these two bits of i think is low grade silver,acid test is is not as red as it should be,came from the depths had a couple of old english shillings come out as bad as this,at least its something to look at,had to use eletrolysis to get them even reasonable.


Age estimate?
Is that the corroded look or due to it’s original casting?

hi gold pandemic,corrosion is the culprit.strange ive had 925 rings come out of the black ooze in great condition,but stuff stuck on rocks not in the ooze suffer after time,sometime post 1900.