Watch List notes:

(g) Spain, Alfonso XIII (1886-1931), 20-Pesetas, 1899 (18-99 in stars), sm-v, Madrid, boy's head right, rev. crowned shield within Collar of the Order of the Golden Fleece (F.348; KM 709), extremely fine.
provenance
Purchased Seaby, 9 November 1955 - £6.0.0
Estimate: £150 - £200