I have this 1960 Mexican 20 centavos that looks like it's straight from the mint. Beautiful details and has a great shine to it. But it has black spots on both sides. Does that ruin it for you or can you look past that? I feel like for me it ruins it.
That is unfortunate. Luckily, you should be able to find a decent example without the spots for fairly cheap.
You’re correct that those aren’t ideal. I could see it being used as a hole-filler until you locate a nicer example with no spots.
I'd try to treat them with verdicare. If it improves the spots enough that they aren't distracting, it's a win.
I do have a nice example without spots, but I'm asking because I see coins like this from time to time and I'm curious what other collectors think. Some people like or don't mind features that are a turn off for me. Like I think "woodie" coins are horrible looking, but some people get giddy about them.
Those black spots may be "arrested" green verdigris once upon a time, particularly the one on the pyramid.
It would bother me unless is was a key date and just a hole filler. That year is not difficult to find cheaply in BU condition, unlike the 1959. I paid $1.25 for my 1960 example.
I know I can find a better one but this one is just so pretty I wish I could do something to fix it. This is a scan so it doesn't capture the shine. These bronze coins when they look straight from the mint, I love to look at them.
Here's a few of these brand-new looking bronze coins that I picked up recently. This is a phone pic so it shows the shine better. The small one is a 1957 Honduras 1 centavo, which apparently no one wants but I think it's a nice coin. The large one is 1959 Mexico 50 centavos.