Danzig made two types of commercial rifles after the war, a .22 version and a 7.92mm version using a 98a receiver, this one is the latter and is the earliest I have recorded (about two dozen altogether 801 - 8083, - the .22 versions all are serialed under 1000 and far fewer known, though it might just be due the fact i do not follow these closely).
These 98a versions have Danzig's military proof (Prussian eagle) on the receiver and bottom of the barrel above the barrel serial number. I think they are all 7.92mm but I am not sure, they may have made a few in other calibers, but these 98a based variations seem to have been made first, using leftover military parts, - they are all usually marked "Germany" on the buttstock, implying they were for export and possibly when Danzig was still "Germany" (meaning very early after the war, before Versailles), the .22 versions have the Danzig city seal on the receivers and no military components (at least some have the "Germany" on the stock too), probably after Versailles, - for a short period, a couple years after Versailles, Danzig did make rifles and rifle barrels and did military related work for Poland. We know this due to it making big news at the time, two contracts, one to Mexico and another to Peru (that was having a boarder dispute and thoughts that Danzig, a League mandate, was involved is supplying arms caused a great controversy at the time, - this was what eventually led to Danzig’s machinery being sent to Poland, not Versailles itself - Poland at the time was hostile neighbor to have and was well on the road to having no friends in eastern and central Europe) caused Danzig to lose the ability to make military related items because it was a League mandate and under its protection.
Anyway, these come in many slightly different variations, most seem to have scopes, but not all, the stocks have different work done to them, are higher quality than the .22 versions and most have the "Germany" marking on the stock, implying they were for export. I think the 98a versions were probably mostly made in 1919, the .22 during 1919-1920, I doubt after July 1921 as the League made their ruling to officially close Danzig and dismantle Danzig's arms making machinery (machinery only useful to make arms - all else to remain to make bicycles, though this seems to not have occurred...) Anyway, Danzig lost its rifle making machinery by late 1923
For those that have the Summer 2012 MRJ-207, I cover this period in some detail in my article.