What if a 2 dollar bill with a red seal doesn't have silver certificate on it?

Answer 1

Actually, in would be VERY surprising if a red-seal $2 bill had the words "silver certificate" on it. The last red-seal $2 silver certificate was printed in the 1896 series. By the early 20th century most seal colors had been standardized with red used on United States Notes and blue used on silver certificates.

I'm sure if you look at your bill again it'll have the words "UNITED STATES NOTE" in a banner across the top of the bill's front.

For a more specific answer about its value, please search for questions like "What is the value of a (date) US 2 dollar bill?", where (date) is the date on your bill.