Peter & Jonathan Bateman Sugar Tongs value

Hi

I was luck enough to recently purchase a pair Peter & Jonathan Bateman, Bright cut sugar tongs… The tongs condition is in an overall good condition but there is sign of wear on the inside/outside of the bow (i suppose this is due to over-cleaning)

The Makers hallmark and Passat is easily read… the kings head is a little worn but can be recognised

Has anyone got an idea of their worth

Many Thanks
Paul