Constantine II (Caesar 316-337, Augustus 337-340 A.D.) -  AE3 - 19.57mm, 2.76gr
Obverse - CONSTANTINVS IVN NC
Constantine, his radiate, draped and cuirassed bust left,
seen from the back.
Reverse - BEAT TRA-NQLITAS ,
Altar with globe atop, inscibed VOTIS XX, three stars above.
F B in field on both sides of altar.
PLON in Exergue.

Minted at officina P in Londinium (London, England) in 322-323 A.D.

Reference:
Sutherland, C.H.V., "Roman Imperial Coinage", Volume 7 (RIC), London, p113, nr. 253 var. (bust type).
Failmezger, V., "Roman Bronze Coins From Paganism To Christianity 294-364 A.D.", nr 299CII
Sear, D.R., "Roman Coins and their Values" (RCV 4th Revised Edition), p332, nr. 3941, variety with radiate, dr & cuir. bust left.
Van Meter, D., "Handbook of Roman Imperial Coins", p295, nr 31.
Suarez, R., "Encyclopedia of Roman Imperial Coins II" (ERICII),  p967, nr.1256 var (B52, O5, R2, T2, M8, EXE: F/B/PLON)

Quality: Very Fine+