Yes I notified him, also there was Georg Schwan. They both are mentioned in 1852 so I guess the question is if they were active in 1844?
How I understand this is that there are known objects made by them in 1852 and it is quite clear more or less that every silversmith worked for a longer time than just for one year. They both seem to have made similar types of silverware.
Here is a some what more clearer picture of the 875 and head control mark.
