Russian Prison Guitar keychain switchblade

Very cool little Russian made guitar switchblade keychain bottle opener knife. I believe this was made in a Russian prison, most likely in the 1970s. It measures 2.75 inches closed and 4.25 inches open with steel liners. Colorful and cool with two places to attach the keychain. The blade seems full and the knife works great. Blade tip seats well closed, good snap and tight lockup. Very unique little switchblade!