Crosman Model-160 - Third Variant.
Courtesy of Leonardj.
The third variant saw the introduction of the modular, adjustable trigger unit to the 160.
The S331 rear peep sight was offered as an option, and could be factory installed, or purchased as a kit to be installed by either an Authorized Crosman Service Station, or by the end user.
This particular 160 came equipped with a higher than normal front sight, and a protective hood.
The information below is taken from the catalogue advertising the auction of the Myron Kasok airgun collection, sold by the Rock Island Auction Company December 13-15, 2003. Pic is copyright Rock Island Auction Co.