What is the value of art work by universal statuary corp Chicago from 1966 stamped with number 133 L and 233 R?

Oh, dude, you're asking me to appraise some vintage art over here? Like, I'm not an antique roadshow expert, but if you've got a piece from Universal Statuary Corp Chicago with those specific markings, it could be worth a pretty penny to the right collector. You might want to get that bad boy looked at by a professional to get a more accurate valuation, though.