I have been a long time reader of the E-Sylum and recommend it to all numismatists. It is a free weekly newsletter published by the Numismatic Bibliomania Society (highly recommend you join the society too but it is not required to receive the free newsletter).
Click on this link to receive a sample issue – http://e-sylum.org/
Here is a short excerpt from their site:
Begun in 1998, the newsletter goes out by email every Sunday night to over 6,000 numismatic bibliophiles, researchers, and just plain collectors around the world. Topics are all over the numismatic map, and most people find something of interest each week. Coins, tokens, medals and paper money of all time periods are discussed as well as news on a wide spectrum of numismatics and numismatic personalities. We’d love to have you on board.
WHAT’S WITH THE FUNNY NAME? Well, our organization is the Numismatic Bibliomania Society, a group for people who love coin books and are crazy for any and all information about numismatics. Our print journal is The Asylum, so our electronic publication naturally became The E-Sylum. While The E-Sylum is free to all, only paid members of NBS receive The Asylum.
Hope you subscribe!