Rare coin and very rare variant, unlisted on the RIC list marked with the letter Δ (delta).
All coins in this RIC 202 series are rough to very rare, as shown by the rarity scale for the individual publishers: SMTSA to R5, SMTSB to R4, SMTS gamma to R3.
Roman Imperial
Delmatius (335-337), Follis 335-336, Thessalonica mint
Obverse: laureate, draped, cuirassed bust right
FL DELMATIVS NOB C
Reverse: two soldiers holding spears and shields with one standard between them, SMTSΔ below
GLORIA EXERCITVS
Weight 1.32 g