u/Annoyed_Heron

Said to be by Gerrit Lundens by the auction house… however, it doesn’t at all match any Lundens signatures I could find. I’ll attach some examples in the comments. It almost looks more like “g Lunde f[ecit]” to me but I’m unaware of Lundens ever spelling his name that way.

If that letter at the end of the signature is an s, it would be a long s (judging by the shape) which obviously cannot be used at the end of a word. Thus, I’m going with f as a more likely candidate. The odd-looking G (which looks more like a numeral 9) and the generally scrawled nature of this signature is very much at odds with Lundens’s usual clean italic script.

Reads as Gerrit Loen with an italic swashed e in the surname to me, but that doesn’t turn up any known painters. I don’t think it’s Gerrit Lundens or Gerrit Dou. I’m not too set on the first name being Gerrit either, to be completely honest.