Does the 1950 100 dollar bill have strip on the inside?

No, the 1950 series $100 bill does not have a security strip on the inside. The security features of older currency, like the 1950 $100 bill, primarily relied on watermarks and ink colors rather than the embedded security threads or strips that are found in more modern bills. The introduction of security strips came later, with newer series of U.S. currency.