Watch List notes:

BULGARIA. Second Empire. Ivan Sisman, 1371–1395. Trachy (Bronze, 16 mm, 0.80 g, 6 h), Turnovo. Monogram of Sisman; above, N. Rev. Monogram formed from the letters of "Tsar". Dochev 4660. Raduchev & Zhekov Type 1.15.18-20. Youroukova & Penchev 134. Scarce variation. Very fine.
From the collection of a scholar.