This will be the last bit of experimental drekeology (trademark copyright trademark) copper working for the immediate future as tomorrow I am headed back to University but this is the result of me having a conversation with a Professor of Archaeology and having a change of plan on how I pursue forced oxidation.

I was able to contact one of the higher up professors in the archaeology program at the University I study at earlier today and Told him what I was doing and what copper artifacts might look like in the 100-200 year range and he sent me a lot of images of them and they all had one thing in common.
They were mostly brown with light greens beginning to form.
almost all of the artifacts were from arid regions of the United States and Canada. Most were from the Great Basin with some from the Mojave desert and Snake River Basin. All of these regions have a duller brown copper as simply metals degrade slower in these environments and copper patinas slower as a result, so even after 100+ years the copper is still going to be a dull brown with some green forming.

This example is not quite as oxidized as the examples I was able to see but I will let the rest of the oxidation occur naturally, ill just say I gave it a bump.

The process was done with eggs, eggs produce hydrogen sulphate when cooked so the process was very simple. I overboiled 3 eggs, put them in a bag with my copper adze head, mashed the eggs to release the sulphur and speed up the process and then just let it sit for several hours. By the time I was done the top had patina'd into a strong dull brown with some color accents in the gleam of the metal and the bottom is a bit brighter and a bit patchier and more varied in its color as it wasn't in contact with the air (something that happens to metal artifacts all the time).

so yeah, I think going forward I will use this to "age" my metals as it both looks nicer, is less involved with harsh chemicals, and also is more gradual so I have more control over the final product and i can let it age a bit more naturally after the process. I also plan on revisiting copper artifacts in more contemporary history to try and see if I was more wrong than I thought on how fast copper oxidizes