Mark on trigger-guard ?

[mecano44]

hello Everybody

I'm new on this forum, but I collect Parabellums ( as you for sure know we dont use to say "Luger" in Switzerland ) for a long time.

I have an Imperial Luger with a 1912 mark on the receiver and usual military markings : C/D, C/C, C/S + Erfurt Imperial Eagle. Its is an altered one, I guess after 1920, because the troggle-lock is DWM . As you can see the old-open has been added, and the frame as no stock-lug. There are many C/D on parts. ( also unde the stocks )

There are two strange points, I would like to get some information

According to " Walter" the Erfurt serial numbers of the year 1912 dont go over the "a" suffix and " Still " gives 866b as maximum number known . I have a 1034b...... any idea about this ?

Second point : there is a gothic P mark on the trigger-guard....any explanation about that ? there seem to be a "crown" over the P, but hard to say...

Many thanks for any answer and apologies for my English