Cloth Seal, Alnage, Crown

Cloth Seal, Crown, Image & Found by London Mudlark.
Found on the Thames foreshore.

Two discs of possibly a four part alnage seal but the tag at the top of the rove disc is puzzling. A crown or thistle with 1/2 to its right and possibly part of an inscription curving down top right - III.

William III or less likely George III?