Hi Qrt.S,
Arguments keep us sharp and make us dig deeper and may change our opinion.

If we observe the mark of Adrianus Nobel, shown in
Netherlands’ Responsibility marks from 1797; no serifs, notice the space between A N and if we observe the mark of Jacobus van Dam; the A has one ‘fat’ leg and D with serifs.
We have to remember the silversmith used a worn smudged makers’ mark. Could it be that Adrianus Nobel also used a maker’s mark with serifs? Yes, turned out he did and not recorded in
Netherlands’ Responsibility marks from 1797;

Finally some silver books are contradictory about the work of Adrianus Nobel and it his master’s mark has been seen on; lodderein box and pillbox.

I believe we can say we have enough prove that it is the maker’s mark of Adrianus Nobel. Lucky good shot Qrt.S!
Oel.