7 dollar bill from 1780

[amudd]

I came across a 7 dollar bill. N 702 , ten shillings no. 11h5q. 1784, 250 dollar bill no.1165 from 1781,4 dollars no.116 1778, lastly 8 dollars no. 25480 1780. How Can i Tell if they Are real and what Are they worth? They have been passed down in my family for generations. N look really old

 

[Mackaydon]

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