Hi Miles,
Your 'deformed' maker’s mark enhanced and rotated:

I believe it to be a head, bust of a man for;
Jan de Vries, registered silversmith in Amsterdam during 1710-1753, born in the year 1686 and died in the year 1753. Jan de Vries; small silver service maker and maker of cast spoons.
Maker's marks used by Jan de Vries /Amsterdamse Zilversmeden en hun merken, K.A. Citroen.Peter