Ya should have put out a call. I have one and a 1948 and 1952, and maybe not as nice a tone, but I'd been happy to gift it to you.
Nice cent! I won this '57 1 Gulden Netherlands this past weekend. I was drawn to the toning/patina as well. 0.1505 ASW. I paid $5 plus gas to the LCS.
I spied this baby years ago and had to have it! In an old soapbox holder. But my favorite coin from the Netherlands will always be the tiny silver 10 cent coins.