I agree with Mackaydon! You would need to determine the Note's condition and compare it to similar Star Repeater Notes that sold. I believe it would be considered as a "3 digit" Repeater which is fairly collectible by itself and then you add that it is a Star Note, then that is another plus. Without knowing the condition of the Note and what is on the mind's of Collectors when it may go up for Auction, there is no way to really determine what price a person would place on it to own it. However, unless it is in bad shape, it should at least fetch 1.5 to 2.0 times it's face value but could possibly fetch 5.0 to 10.0 times face value if it is an Uncirculated Gem.
Frank