This finely crafted pre-World War II semi-automatic commercial rifle is similar in operation to the Czech ZB-26 light machine gun, designed by a member of the same family, Emmanuel Holek, who most notably designed ZH-29 semi-automatic rifle while working at Brno prior to starting his own gun company. The rifle utilizes a tipping bolt actuated by a gas piston running beneath the barrel, and with a detachable spring loaded box magazine. Disassembly is easily performed through removal of a locking pin at the rear of the action. It has a drift adjustable blade front and notch rear sight. The left breech area of the barrel is marked "586" followed by proofmark and the year "39" (1939), and "8x57" on the right. The top rear of the receiver is marked with a circled Holek company logo above "ORIGINAL/HOLEK/AUTOMAT" in three lines. Serial number "141" marked underneath the receiver, with the full and partial matching serial number marked on various components. A silver plaque inscribed with a crown above initials "N.V" is located on the underside of the buttstock.