PAT 193.021 18cm Spanish Aluminum Coilspring Vintage automatic knife sliding button

Vintage PAT 193.021 18cm Spanish Aluminum Coilspring automatic knife sliding button with blue/white swirl scales most likely made 1960s or 70s in Spain. The knife measures 17.7cm (6 15/16 inches) open and 4 inches closed with aluminum frame. The clip blade is 98% full, or better with most of the original finish with some light scratches and the tang is stamped PAT 193.021. The synthetic black & silver swirl scales are in good condition with some handling marks and one small chip at the bottom of the front scale. The knife works great with blade tip deep in the well closed, strong smooth snap and tight lockup. No rattle if shaken with blade open. EX- condition