Nice score !
Looks like you actually landed an LHS Silvercrest, not Sterncrest. But regardless, that looks like a beauty and good smoker ! Also, unlike with the Irish or English silver marks, I don't know of a good way to get to a date on American silver based on the hallmarks. Or I haven't found one yet ;-) There's some stuff out there on dinner and plate ware, but that's about it.
All that being said. Congrats on the score. For $20... I think you did well. :clap: