In late 1912, however, engines were assembled and numbered, and then stored for later installation.Consequently serial numbers and dates are no longer in order.
This Springfield 1911 has the third type long hammer with rounded rear edge.
The ordnance "flaming bomb" replaced the Rampant Colt on the left rear of the slide, behind the slide serrations.
For example, B-numbers in the B-1,000 to B8,000 range were used in October, B-7 to B-12,000 in November, and B-5,000 to B-12,000 in December.
Ford's records show 157,425 as the first number of fiscal 1913 (October 1, 1912), yet cars with engines in the 153,000 to 157,000 range were sold in October (in addition to the "B" engines).
Right side of slide bore the standard slide inscription of the Colt Model 1911 -- "MODEL OF 1911 U. ARMY." Checkered walnut grips with uncheckered diamond areas around the grip screws were standard.
The number of rows of checkering between the points of the uncheckered diamonds number 11 /- 1.However, some engines were assembled and numbered at branch assembly plants.Highland Park would ship a block of engine-number records to an assembly plant and these engines might be made weeks or months afterwards.Springfield Model 1911 serial number 126398 - Ordnance procurement records for Springfield Armory Production indicate that this was one of 1,564 pistols manufactured from July 1, 1916 - December 31, 1916.Colt granted the Ordnance Department the right to manufacture the Model 1911 at government arsenals on April 21, 1911.Consequently, engine numbers can only be used to date the "engine" NOT the car.