I ask forum members how do I date these Dutch and German 20mm and 27mm cases?
20x139 DM 1001A1 LOS NWM-3-446-X
20x139 DM 1001A1 LOS NWM-4-49-X
20x139 DM 1001A1 LOS NWM-3-39-X
20x139 DM 1A1 LOS RH-2-28-X
27x145 DM 1001 LOS NWM-1-022-X
27x145 DM 1001 LOS NWM-015-X
27x145 DM 1001 DN-1-16-X
These are just some of the codes I want to date as headstamps on steel cases. I understand the DM is a drawing or case design. How do I find a production year?
20x139 DM 1001A1 LOS NWM-3-446-X
20x139 DM 1001A1 LOS NWM-4-49-X
20x139 DM 1001A1 LOS NWM-3-39-X
20x139 DM 1A1 LOS RH-2-28-X
27x145 DM 1001 LOS NWM-1-022-X
27x145 DM 1001 LOS NWM-015-X
27x145 DM 1001 DN-1-16-X
These are just some of the codes I want to date as headstamps on steel cases. I understand the DM is a drawing or case design. How do I find a production year?