Every ancient coin is associated with a place, at the least where it was minted. Rarely, but occasionally, we learn where a coin was found. Many ancient coins depict the personification of a nation, province, city, or river. Every coin has some tie to geography. Of course collecting every coin is not a theme, so geography must be narrowed down in some way. Collecting the coins of one mint, city or region is popular. Hadrian's famous "travel series" would make an excellent geography theme collection. Another is the travels of Paul. Or you could collect coins from all places you simply find captivating.
Honorius, 23 January 393 - 15 August 423 A.D.
SH53618. Gold solidus, RIC X 38, gVF, weight 4.379 g, maximum diameter 20.7 mm, die axis 180o, Thessalonica (Salonika, Greece) mint, 397 - 402 A.D.; obverse D N HONORI-VS P F AVG, helmeted bust facing, diademed, cuirassed, cross on breast plate, spear in right over right shoulder behind head, shield decorated with horseman on left arm; reverseCONCORDIA AVGG, Constantinopolis enthroned facing, head right, holding long scepter and Victory on globe, foot on prow, COMOBin ex; rare (RIC R2); SOLD
Julius Caesar, Imperator and Dictator, Assassinated 15 March 44 B.C.
This type was a special military coinage produced by Caesar during his final campaign. This campaign against the Pompeian forces in Spain culminated in the battle of Munda on 17 March 45 B.C. The obverse refers to Caesar's mythical descent from the goddess Venus. The reverse refers to Caesar's victories in Gaul and the male Gaulish captive may be Vercingetorix.
RS50608. Silver denarius, SRCV I 1404, BMCRR Spain 89, RSC I 13, Crawford 468/1, Choice VF, weight 4.110 g, maximum diameter 18.1 mm, die axis 45o, Spanish mint, 46 - 45 B.C.; obverse diademed head of Venus right, small Cupid behind; reversetrophy of Gallic arms; on left, Gallia seated left with hand to head in attitude of morning; on right, male (Vercingetorix?) captive seated right, hands bound behind, looking up; CAESARin ex; SOLD
Titus, 24 June 79 - 13 September 81 A.D., Judea Capta
SH58765. Orichalcumsemis, RIC II 504, Hendin 1598, Cohen 112, BMCRE II 259 (notes mint uncertain), Morrisson BnF 275 (Rome), RPC II -, gF, weight 4.116 g, maximum diameter 16.7 mm, die axis 180o, uncertain eastern (Thracian?) mint, 80 - 81 A.D.; obverse IMP T CAESAR DIVI VESPAS F AVG, laureate head right; reverse IVD - CAP / S - C across fields, palm tree, flanked by a mourning Jewess captive seated left to the left, helmet and yoke to the right; ex Ancient Imports; rare; SOLD