www.925-1000.com

I am asking for identification of the producer and production date.
I will be grateful for the information.

Mark 1, a triangular makers mark appears similar to one listed at the bottom of this (Germany A-B) page: https://www.925-1000.com/Fgerman_marks_a1884.html

If correct, the date range is there. Mark 3 is Crescent & Crown. Mark 4 is 800 in rectangle. Mark 2 is ?? up for grabs??

Hello, these are the marks of Breidenstein and Renaud from Frankfurt, founded in 1889. The mark on the left hand side is incompletely struck. It is an image of pliers, below should be letters B and R, invisible here. Follows the image of a lion, lying down. I do not know how long the company was active, possibly until the 1920es. Regards, Bahner

... forgot to add the link
https://www.925-1000.com/Fgerman_marks_a1884.html
See at the end. B.