Anyone Collect Single-Year Types? Show Us Your Favorites!

Not really a "world" coin, but I have a fondness for ancient coins of rather obscure people who didn't rule very long; one of my favorites is Aemilian, an ephemeral emperor who ruled Rome from July-October 253.



It was the custom in Rome at the time for the soldiers to grant the office of Princeps to the highest bidder. The emperor in early 253 (Trebonianus Gallus) had a reputation as a spineless coward, so the armies were happy to depose him for rough-and-tumble Aemilian, who just won a glorious and profitable campaign against the barbarians Gallus had been paying tribute to. The Senate had just ratified the elevation when Gallus' general Valerian arrived with reinforcements for the dead emperor. The armies wasted no time in deposing Aemilian to spare their own lives and receive the customary accession bonus for their loyalty.

Here is another one from Finland. 1918 5 Penniä.



It is my understanding that this coin was struck by the Finnish Reds during the Civil War when they controlled Finland's capital, Helsinki, in the late winter/early spring of 1918. The mintage was only 34,880. A 5 penniä coin with the Finnish coat of arms was also minted later in 1918 (-1940). That makes four different designs in two years for the 5 penniä coin.