Thanks. Yeah, late 60s early 70s. Was pretty sure was Poly as it’s consistent with other early 70s Blondes I’ve tried… plastic-y thick finish with chunking wear, and creamy undercoat visible. But I wanted the added wisdom of TDPRI. Always learning.
As I mentioned above, it is best to learn how to test a finish to know for sure. It is simple enough. Many finishes are not as obvious as this one.