My friend recently purchased a very nice G date serial 269d with matching type 1 magazine. The unique thing about the pistol is that it has 3 different G date proofs throughout the gun. the receiver is proofed droop eagle 211 and S92. The barrel, receiver lug and matched mag are proofed 154. Is this a common occurance in the d block of the G's? Also does anyone know when the DWE 211 first is seen and when it was phased out? Help!