Watch List notes:

(g) United States of America, Gold Quarter Eagle, 1888 $2.50 Liberty, Type 3, San Francisco, by James Barton-Longacre, 'coronet' Liberty head left, below halo of thirteen stars, rev. Eagle akimbo, S below, edge milled, 4.19g, 6h (PCGS 7840; NGC ID 25LC), acid test mark on rim at 12 o'clock, otherwise lustrous and quite 'mint fresh', extremely fine, with only 16,001 struck.

Estimate: £200 - £260