I believe that is a public key because it begins with an L and appears sort of quick. You want your non-public key. Do not put up a video of the non-public key even when your thumb covers a few of it.
It seems prefer it’s meant to return with the data for one litecoin on the blockchain however the unique proprietor might have stored a replica of the non-public key and withdrawn the litecoin years in the past. Solely solution to know is to plug in that handle to blockchair and verify the steadiness.