so I recently decided to get into 1$ silver certificates and I found a good website on different series that were produced but I know some were made from different blocks like a-z or something and is there anything else that makes them different besides series and block...also is there a good website to find all that information on which blocks were produced for what series and so on and so forth I cant seem to find one...sorry for being such a newbie on all this haha and thanks in advance