The abbreviations below are used in coin inscriptions, Forum 's catalog descriptions and in numismatic publications.
ab init. - ab initio (Latin) - from the beginning
A.D. - anno Domini (Latin) - in the year of our Lord
a.d. - ante diem (Latin) - before the day
ad fin. - ad finem (Latin) - at the end
ad init. - ad initium (Latin) - at the beginning
A.U.C. - anno urbis conditæ (Latin) - in [the year from] the building of the City (i.e., Rome), 753 B.C.
AVG. - augustus (Latin) - emperor
c. - circa (Latin) - about
CAES., CAE., C. - caesar (Latin) - junior emperor, son or heir of the emperor
cf. - confer (Latin) - compare
D.G. - Dei gratia (Latin) - by the grace of God
D.N. - Dominus noster (Latin) - our Lord
D.V. - Deo volente (Latin) - God willing
e.g. - exempli gratia (Latin) - for example
et al. - et alibi (Latin) - and elsewhere
et al. - et alii (aliae) (Latin) - and others
etc. (&c.) - et cetera (Latin) - and others, and so forth
et seq. - et sequentes (Latin) - and those that follow
h.a. - hoc anno (Latin) - in this year
h.e. - hoc (hic) est (Latin) - that (this) is
h.m. - hoc mense (Latin) - in this month
h.s. - hoc sensu (Latin) - in this sense
h.t. - hoc tempore (Latin) - at this time
ib. (ibid.) - ibidem (Latin) - in the same place
id. - idem (Latin) - the same
i.e. - id est (Latin) - that is
IMP. - imperator (Latin) - commander of military forces
in f. - in fine (Latin) - at the end
inf. - infra (Latin) - below
init. - initio (Latin) - in the beginning
in loc. - in loco (Latin) - in its place
in loc. cit. - in loco citato (Latin) - in the place cited
in pr. - in principio (Latin) - in the beginning
in trans. - in transitu (Latin) - on the way
i.q. - idem quod (Latin) - the same as
loc. cit. - loco citato (Latin) - in the place cited
l.s.c. - loco supra citato (Latin) - in the place above cited
m.m. - mutatis mutandis (Latin) - with the necessary changes
N. - Nepos (Latin) - grandson
N.B. - nota bene (Latin) - mark well
ni. pri. - nisi prius (Latin) - unless before
non seq. - non sequitur (Latin) - it does not follow logically
o.c. (op. cit.) - opere citato (Latin) - in the work cited
P. - (pater) papa (Latin) - father (pope)
P. - populus (Latin) - people
q.e. - quod est (Latin) - which is
R. - regina (Latin) - queen
s.a. - sine anno (Latin) - without date
S. C. - Senatus Consulto (Latin) - by the authority of the Senate
v.g. - verbi gratia (Latin) - for example
viz - videlicet (Latin) - namely
v.s. - vide supra (Latin) - see above