Early Denmark?

[finesilver]

Good evening, I picked up this spoon a little while ago and haven't had much luck. Seems most similar to Danish hallmarks, but not sure. Thank you everyone for your consideration
https://ibb.co/3fzj17K

[finesilver]

[Qrt.S]

I'm not either sure, but this mark (CO?) could belong to Christian Olsen, active in Copenhagen 1794-1804. He made spoons. Danish marks are sometimes difficult to "understand". In this case the three tower town mark is missing making it difficult to give en absolute answer.