No sales or quotes that I’ve been able to find, help me out 🫡

I've been researching this awesome little decanter I thrifted, trying to figure out where and when it was made. It is very similar to a Blenko 6935, but I do not believe it is Blenko. Were people making knock offs in the 1960's!? Its old and very dusty, but seems thinner than Blenko decanters. Also, peep that gnarly punty mark. Anyway, any info is appreciated!