Watch List notes:

Victoria (1837-1901), Penny, 1856, def:, plain trident (BMC [Peck] 1510; S.3948), much residual lustre but with slight cabinet friction to hair, otherwise extremely fine or better, very rare.
provenance
Spink Numismatic Circular, March 1993, no. 1115 (illus.) - very rare, practically full lustre, good Ef" - £185
Estimate: £800 - £1000"