Nice old gold coin! I read The Three Musketeers recently and saw that pistoles were mentioned a lot in the book and I believe that a pistole was worth two gold Ecus.
Answering my own question, I see that CNG refers to gold world coins as AV. However, I would like to say that I really appreciate that CoinTalk does not force the World and Ancient communities into the same forum as most other numismatic sites do.