Watch List notes:

BRITISH COINS, Scotland, Mary Queen of Scots, Silver Portrait Testoon of Four Shillings, 1553, type I, young crowned bust right, engraved by John Acheson, linear and beaded circles with legend surrounding, initial mark cinquefoil, *MARIA. DEI. GRA. R. SCOTORVM, rev crowned Scottish arms, cinquefoil each side, linear and beaded circles surrounding with legend and date, initial mark cross patte, +.DA. PACEM. DOMINE. 1553, 4.66g (SCBI 58:284; S 5401, plate coin). One small short flan split, toned with some weak patches, otherwise bold fine and the plate coin from the Spink Standard Catalogue issued in 2003, rare and desirable.
ex F A Walters Collection, Sotheby, 24 October 1932, lot 657 and plate V, sold for £7 to A H Baldwin & Sons Ltd

Estimate: £5000-7000