Note to mods: I couldn't find a forum for this post, if there is a more appropriate forum by all means move it there.
A friend recently sent me a series 1969 $1 star note. The star in the top right hand serial number is higher than normal. I was told that error star bills were very rare and my bill was worth significantly more than face value. What do you all think?

Here is a normal serial for a star note:
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