Along with the Baseball inspection sticker, Samick has used a gold "Made in Korea" sticker (with black lettering) since at least 1974. Around 1988, it changed to mimic the Japanese style with a black background and gold border/lettering. This was only used until 1992 on Samicks when they began silk-screening serial numbers and "Made in Korea". However, contract builds for other brands continued to use it until at least 1994.
However, similar or even identical stickers can be found from other manufacturers, so this is far from conclusive proof of a Samick build on it's own, but taken collectively with other hallmarks and features it can help.