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Block Question

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ghostrider
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 Posted 02/24/2016  12:24 am Show Profile   Bookmark this topic Add ghostrider to your friends list Get a Link to this Message Number of Subscribers
Although I have collected various bill (mostly from circulation or crisp notes from the bank) I'm really new to collecting currency and have been following this forum trying to get a basic understanding or terms. One of the things that I'm not sure of is when someone refers to either an "A" or "B" block what are they referring to.

I assume that they are referring to the signatures but wouldn't any change in signatures turn a 2009 note into a 2009a. So what constitutes a block and would that definition remain the same no matter what the denomination is?
westernsky
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 Posted 02/24/2016  01:21 am  Show Profile   Bookmark this reply Add westernsky to your friends list Get a Link to this Reply
Blocks refer to the prefix and postfix letters in the serial numbers. A note with serial number AxxxxxxxxA would be from the A-A block; a note with serial number AxxxxxxxxB would be from the A-B block. Hope that helps.
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