Mexican Picklock 25cm vintage hand made Aluminum bolster automatic knife

Vintage sterile 25cm Mexican Picklock automatic knife made by hand in Mexico, most likely in the 1950s or 60s. The knife measures 24.5cm (9.75 inches) open and 5 3/8 inches closed with steel liners, button and safety cap and aluminum bolsters. The spear point blade appears to be full with patina and light spotting. Hard to say for sure if the blade is full when these knives were hand made and there are many variations. The blades on these are usually stamped MEXICO above the locking (sear) hole, but this one has no markings. The horn scales (handles) are mostly Cream colored with some translucent green and black and in nice condition. The knife works well with blade tip seating normal closed, good snap and excellent lockup open. Safety works. VG+ condition.