Whats the Filled S all about?

[Pat]

Red Book has I believe 70 something filled S and Clear S.. What's the deal here? Any examples?

[Shingpumps]

It's the proof. Look @ the S.B anthony 79 S. Might give you an idea.

[Brad]

http://www.bakercoins.net/learn/articles/sba/sba.html

http://koinpro.tripod.com/Articles/1979SAnd1981STypes.htm

http://www.bestcoin.com/Diagnostics-Type-Two-Proof-Sets.htm

[Pat]

thanks.....