I do knot know a lot about knives but heres what i can tell you... This knife measures 4 inches long closed and 7 inches long opened... This knife has a blade lock slide button on it, the lock works in both open and closed position... You must put the unlock slide in the unlock position and push the button to open and close the knife,,, but like i said,,, you have to open it manually cause the spring action is not working... One side of this knife is lighter blue than the other,,,, not sure if its faded or it was manufactured that way...
The blade does have side play when opened... The blade is marked --- edgemaster usa.
Do to my lack of knowledge on this type of item,,,, please take a close look at the pictures and bit accordingly.... Great knife for repair or it will display nicely just like it is,,,,. The item "VINTAGE EDGEMASTER POCKET KNIFE SPRING ASSIST PUSH BUTTON FISHTAIL" is in sale since Thursday, June 27, 2019.
This item is in the category "Collectibles\Knives, Swords & Blades\Collectible Folding Knives\Vintage Folding Knives\Factory Manufactured". The seller is "lostnthecornpatches" and is located in Osceola, Iowa. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Norway, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, Honduras, Belize, Barbados, Egypt, Iceland, Jordan, Cayman islands, Sri lanka, Luxembourg, Martinique, Oman, Paraguay, Uruguay.