Originally Posted by Elmetiacos
It looks like a fasces to me... the coin is saying, "Here's a picture of Gaulish acoutrements - the clothes, the horned helmet, the figure-8 shield, the carnyx... and we killed their owners and put them on display! Rome rules! There's our symbol triumphant!"
The axes are interesting, but of course, when you only have the head, it's a tough call whether the weapon was used to chop wood or to chop enemies. Hard to tell from pics, but I would say the first one is more likely to be a wood axe, the second more likely to be a weapon: battle axe heads are generally lighter and sharper because you have to swing them about much more in a fight - unlike swords, battle axes are best kept in constant motion. With this in mind, if the Celts used axes in combat, then it's likely there were specialist axemen because you'd need to practice a lot to build up the muscles and stamina to do this.
On the Pictish capital, I can't do do any better, I'm afraid.