Watch List notes:

John III Ducas-Vatazes Æ Hyperpyron. Emperor of Nicaea. Uncertain mint, AD 1222-1254. Christ Pantokrator enthroned facing; three pellets below the raised arm of Christ, IC-XC across upper fields / John standing facing, holding labarum with two pellets on shaft and akakia, being blessed by the Theotokos; IѠ ΠЄ Π (or similar) downwards to left, ΘV Ѡ Π Φ (or similar) downwards to right. Roma Numismatics - Studia Nummorum 07122021#02, Sigla B, 18 (O1 - this coin); for prototype, cf. DOC 9b and Sear 2073. 2.52g, 25mm, 6h.

Mint State.

This coin cited in S. Bendall, 'An Unusual Hoard of Hyperpyra of John III' (2018), Roma Numismatics - Studia Nummorum 07122021#02. Available online at: romanumismatics.com/ejournal;
From the inventory of a UK dealer.