Forum Ancient Coins
An extremely informative site for all levels of collector. The site also features a shop that has a very large inventory of ancient coins. There are coins for all collectors here from the beginner to the more seasoned.
This site has a very active base of collectors who love ancient coins.
The Flavian collection of David Atherton
The link below takes you to a gallery showing the amazing Flavian collection of David Atherton. One could spend hours looking at the coins and admiring the incredible rarities he has been able to assemble.I know I have.
David Atherton's Blog
There are some great and very important Flavian coins on this site. All of them have very interesting write-ups. This site is a must for anyone researching the coinage of the Flavian emperors.