1887 Liberty Seated Quarter. Briggs 1-A. MS-67 (PCGS).Gorgeous brilliant silver surfaces are decidedly semi-prooflike. Circulation strike quarter production remained low in 1887 as the commercial market continued to absorb the flood of older dated coins that came out of hiding after silver and paper notes achieved parity on April 20, 1876. The present example is a conditionally scarce survivor from a mintage of just 10,000 pieces.