2356

EXTREMELY RARE EXPERIMENTAL MANNLICHER M1897 PRESSURE TEST PISTOL

Currency:USD Category:Firearms & Military Start Price:7,500.00 USD Estimated At:15,000.00 - 25,000.00 USD
EXTREMELY RARE EXPERIMENTAL MANNLICHER M1897 PRESSURE TEST PISTOL
NSN. Cal. 10x25MM. Mannlicher made approximately 1000 1897s in several configurations. In general, the earliest pistols had a fixed (nondetachable) magazine. A few were submitted for Swiss military testing in 1897. Another small quantity was apparently forwarded for evaluation by the French. This particular gun, one of the latter, differs from standard production 1897s in being chambered for the 10mm (10x25) cartridge and having a fixed magazine that extends all the way down to the bottom of the trigger guard. The round bbl is 4.75î long with the overall gun having a length of 10.5î. As appropriate to a pressure test pistol, there is no front sight. The pressure testing fixture was secured to the bbl extension by a screw on each side (screws are missing). Capping the chamber is a finely threaded plug. The forward portion of the bolt has a standard contour with a broad scallop just behind the extractor. Unlike most 1897s, the rear of the bbl extension, between the bolt recess and rear sight, is rounded. Other differences in the frame relate to the left sided thumb safety and the weight reducing recesses, one just behind each side of the magazine housing and a third in front of the magazine well. In manual operation, rotating the safety lever up puts the gun on safe. To fire, the safety needs to be lowered, the cocking lever depressed, the safety lowered, and the grip safety depressed before pulling the trigger. To measure the chamber pressure accurately, it was necessary to keep the chamber from opening during ignition. This was accomplished by inserting a tightly fitting rectangular block in front of the frame that screwed into a slot in the bbl extension. The block prevented the bbl extension from moving rearward in recoil, locking the bolt in place and effectively converted the pistol to a single shot. To measure the pressure, a copper disc was placed in the chamber. The increased chamber pressure during discharge would deform the disc in a manner that could then be compared against known standards. In almost every case, pressure test pistols are one of a kind. This one is no exception. As appropriate to a pressure test pistol, the gun is in the white with no serial numbers and fitted with smooth walnut panels that are internally hollowed. PROVENANCE: A nearly identical version of this pistol, fully functional, is held by the French manufacturing facility Manufacture díArmes St. Etienne (MAS).  The gun is detailed on page 291 and pictured on page 292 in the Austrian reference book Vom Ursprung der Selbstladepistole by Motz and Schuy Co. 2007.  Unfortunately, other than noting the 10mm chambering and the extended magazine for 10 cartridges, there was no comment regarding production quantity. Note: this consignment originated in France. CONDITION: In all likelihood, this pressure test pistol was originally in the white, as there is no blue evident in even the most protected recesses.††The gun was later burnished over some oxidation, which is why the pressure test housing has a slightly pitted surface.††Minor pitting is on the left side of the bbl extension.††Fewer surface irregularities are on each side of the magazine well and on the floorplate, though edges are generally sharp.††Removal of the locking block and opening the bolt shows an excellent bore with strong rifling.††The smooth grips have probably been cleaned and show some slight gapping at their top.††This is an extremely rare Mannlicher M1897, possibly the only pressure test gun of this type, and one of only two thumb safety M1897s that this cataloger has ever encountered.††Surely the centerpiece of any advanced Mannlicher or early automatic pistol collection.(Antique).   4-48147 LMA200