Hi JB..!
My pleasure! As well, I spent a great deal of time a couple of years ago with the fine folks of German Gun Collector's group and display at Vintagers.. As I have a few Prussian Daly's - they were a huge help.
Anyway - once you identify the grade - please post pictures, as there is a ton (literally!!
) of folks who I know can add any info you may need about your Parker.
My Best Always!
John