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 17.8cm (7 inches) open and 4 inches closed with aluminum frame. The clip blade is 99% full, or better with most of the original finish with a couple of light scratches and the tang is stamped PAT 193.021. The synthetic blue/white swirl scales are in excellent condition and very attractive. The knife works great with blade tip deep in the well closed, good snap and very good lockup with just a hint of movement at the tip open. EX condition