Watch List notes:

BULGARIA, Principality. Ferdinand I. 1887-1908. Æ 10 Santim Essai (30mm, 6h). Brussels mint. Dies by Auguste Birchaut. Dated 1887 AB. Crowned coat-of-arms between two banners, with leonine supporters, all mantled and crowned / Denomination and date in three lines within wreath. CBC –; KM E3. In PCGS encapsulation 39100797, graded SP 64 RB. Rare.