please help id these marks possibly german?

[tonysheffield]

hi can anyone help identify these marks?
i think the 12 means 700 silver content?
the wavy line is test mark?
but the others i don’t know and one is hard to make out but i’d love to know more and perhaps date
thank you
https://ibb.co/mO16yU
https://ibb.co/kf9LQ9
https://ibb.co/bEJx59
https://ibb.co/mbnJCp
https://ibb.co/bDkMXp

[tonysheffield]

[Theoderich]

very nice
it is the hallmark of Gotha
the makersmark (W) could be Johann Caspar Wagner or a maker of family Wilhelmi
ca. 1760-80

[tonysheffield]

thank you for your fast response. i’ll try find out a little more now i have something to go on. i don’t really know much about silver from outside the uk