Difference Between a Vault and a Bank?

Margrette

I noticed in the runic atlas in the Deluxe Starter Pack that is labeled "Vaults, Banks & Points of Interest" that some city runes say they go to a vault and others say that they go to a bank.  What's the difference?   Nothing looks different inside the bank buildings than before the publish and there seems to be no difference in the Bank Actions gump when you are at a "vault" versus being at a "bank."

These are the cities listed as having vaults:

Buc's Den
Delucia
New Haven
New Magincia
Minoc
Moonglow
Papua
Trinsic
Yew

There's no rune for Britain Bank or Britain Vault, only Britain Commons.

These are the ciites listed as having banks:

Jhelom
Nujelm
Skara Brae
Serpent's Hold
Vesper
Zento
Royal [City]