You must know that your bills are of great value; especially if they are kept as a set--with the same serial number; one being a STAR bill. Added value is generated by the fact they are what are called "two digit" bills (serial number is less than 100). Another 'plus' is the grade of each bill--nearly perfect.
If I had those bills I'd contact Heritage Auctions or a similar house of the highest reputation and request their estimate at auction. The final price will be determined by many factors; one will be the quality of the description and the another will be the 'hype' within that description.
Don.....
I'd put a $1,000 reserve bid on them if they went to auction.
BYW , those who collect such notes are involved in the hobby of 'notaphily'.
Several associations in the US specialize in notaphily.
You might choose to ask them for their opinion.
Don......