One of the definitions of bob on dictionary.com is "a shilling". I don't think shillings are used as currency anymore, but is bob still used to refer to any units of currency in British (or other) English?
The term 'bob' describing money is still used as a slang term in Australia, as Thomas has alluded to. It's not just from the old and bolds either. Although it is not as common as it used to be it is still used frequently and if you were to use it would be understood.
I have always found this a bit strange that the use of bob seems to have fallen away. The shilling and the five pence piece are both 1/20th of a pound. For many of us it was still a bob and it still is for me. Unfortunately it isn't worth much any more, unless it is in mint condition.
In those good old days you could by a half pint for a shilling.....
I have come across English people referring to the Kenyan shilling as a bob. I don't know whether Kenyans, Ugandans or Tanzanians would say bob - but the shilling is certainly the official currencies there. I'm pretty sure that the Austrian schilling is not call a bob, though.