Swiss Model 1957 (M57) with leather frog

Swiss Model 1957 bayonet. Modern Cold War era bayonet issued with the Swiss SIG SG 510 or Stgw 57. Blade marked W+F in a circle indicating assembly by Waffenfabrik Bern. Maker is Wenger indicated by a W over the serial number. Excellent condition and beautifully designed knife bayonet complete with original maker marked leather belt frog as issued and used.