Manufactured c. 1976, in a small batch with loaded chamber indicators with an estimated total production of just 50 pistols, made from existing bolt pieces of earlier pistols within the reported serial number range "P 8001" to "P 8900" as detailed on page 70 of "Die SIG Pistolen" by H. P. Doebeli. Reportedly, 20-25 of the pistols each sold by Schneebeli (a gun shop in St. Gallen) and Hammerli GmbH in Tiengen. Importer marked on the bottom of the grip frame. Features fixed blade front and notch rear sights, Swiss "cross in shield" crest on the rear sight flat, a loaded chamber indicator on top of the slide, circled "SIG" logo on the left of the slide, and color coded "S/F" safety selector markings on the left of the frame. Matching serial numbers on the frame, slide and barrel, with "BP" (Bernerprobe) proofs on the frame and barrel. Fitted with a pair of ribbed walnut grips. Includes a black leather flap holster with faint manufacturer stamp on the rear, a black leather suspension strap, and an extra blued magazine.