The 1908-1922 Regular Issues Washington/Franklin series of stamps are challenging to identify. They were issued in the billions and over a long period of time often with small production variations such as watermarks and perforation changes. Some of these are difficult to determine even with stamp in hand never mind from an image. There are less common varieties although the odds of finding the really rare ones are longer than winning a mega lottery. `
Part of the fun of stamp collecting is learning how to ID stamps, the Stamp Smarter website has a large amount of information which will give you the knowledge to ID these stamps.
http://www.stampsmarter.com/1847usa/1847Home.htmlThere is also a good How To section
http://www.stampsmarter.com/learnin...e_HowTo.htmlAnd an illustrated Glossary when you run into unknow terminology
http://www.stampsmarter.com/Learnin...aryHome.htmlDon