Thank you Matchlock for your input!
To be honest
it's too many questions to answer them at once! Well, I'm rather edged weapons guy, so I need to look at some papers at work to answer you, so please be patiente, I'll get back to you on Monday (hopefully).
Though - it would be much easier if you could pack yourself and buy a ticket for a few days to Krakow/Krakau to see it on your own eyes and to talk with guns curator in person
. Judging from your posts you could have a great time here in the museum.
And just to make you satisfy for the weekend few more pictures of one of the pistols you liked so much