STAINLESS STEEL 19cm Blue Asian OTF DA Dagger blade automatic knife

Vintage STAINLESS STEEL 19cm Blue Asian OTF DA Dagger blade automatic knife most likely made in the 1980s or 90s in Asia. It measures 18.8cm (7 3/8 inches) open and 4.25 inches closed. The dagger blade is full with blood groove and both edges are sharp with the tang stamped STAINLESS STEEL. The button has what appears to be Chinese writing (symbols) and the blue metal frame is not magnetic, possibly aluminum and very attractive with a couple of little chips out of the paint. Looks like there is a missing shield from a small rectangular recession in the front scale. The knife works great opening when you push the button forward and retracts fully into the frame when you pull back on the button. EX condition.