Do you actually realize what nonsense you are writing here?
Carry coins in your pocket to catch the patina. How long? 30 years 50 years in your pocket? And you don't want to speed it up?
Why not buy old men's underwear that had a back pocket at the bazaar, put a coin in your pocket and don't wash or shower for half a year.
Colleagues don't be crazy - logic, look at e-bay and other sites selling coins and observe - how many coins have an artificial patina.
Black from syrans to brown from tar and sand from glue-chalk and applied with beeswax.
I don't want to show it here, it would just increase the amount of modified artificial coins in the market. But believe me, they are direct factories for cleaning coins and toning them and even cutting letters for Roman coins, etc.
What about vegetable oils and the sun in the window - how does it affect the coin?
If there is huge interest, I will show you the patina in 5 seconds on silver.
Ivan