Russian, (Latvian), Balsam Seal, Riga

Russian, (Latvian), Balsam Seal, Riga, Image & Found by MTC Cocoon Wim.
Found in the Oudenaarde region, East Flanders, Belgium, 20mm (both), 10.8g & 10.9g.

Saltire keys, crown above, H? left, A below, G right // blank

From Ged Dodd, "these two both say R I G A and are most likely Riga Black Balsam Seals".