Based on the search results, there are a few potential interpretations for "Golden Boy (US)," but the most likely context, given your request for a "solid piece," refers to the Henry Golden Boy 22LR lever-action rifle
A 1964 "Golden Boy" LP (US 1st Press).
is a staple of American-made lever-action rifles, renowned for its classic styling, smooth action, and high-quality finish. It is styled after the original 19th-century lever guns. Golden Boy (US)
Often an octagonal blued steel barrel, providing excellent accuracy and a traditional appearance. Based on the search results, there are a
The .22 LR model is popular for plinking, small game hunting, and as a collector's item or commemorative piece. Based on the search results
Known for being incredibly smooth right out of the box.