AE 40 Nummia, 6.08 g, 20 x 25 mm, Sicily mint, c. CE 632-641
SB 884 R. 1450
O: overstruck on coins of Heraclius & Heraclius Constantine of Constantinople dated Yr. 21 or later countermarked on obs with facing busts of Heraclius on l. and Heraclius Constantine on r. with + between their heads.
R: overstruck on rev with monogram 22 and SCs within an oval punch stamped in any position on the rev of the original coin.
ex: W. Esty ex: Heritage Europe (formerly MPO Auctions) Auction 56 lot 2802 (14 Nov 2017)