How to safely remove ink from gold coin?

I beg to differ

 

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When you heat nitrous oxide to about 570 degrees F (~300 C), it splits into oxygen and nitrogen. So the injection of nitrous oxide into an engine means that more oxygen is available during combustion. Because you have more oxygen, you can also inject more fuel, allowing the same engine to produce more power.

 

You are right!
Cal

 

When I was younger hot rodders used to use nitrous oxide to win races. You could tell when they opened the value, the car would take off. I guess I'm showing my age.

 

Cal must still be reading his Hot Rod mags from the '60's like me!

 

Muscle cars were the glam cars when I was in my teens and early twenties. Mags were the closest I got to having a hotrod. By the time I could afford one, I bought a pickup and coins.

Cal

 

It's still done all the time - you don't need to be old to have seen or used nitrous oxide in a car!

I used to use 175hp of it in my Camaro. Talk about pushing you back in the seat - it was quite the thrill.

 

I meant about the nitro-methane in funny cars and dragsters (Rails, we used to call them). Think "Top Fuel"

I remember when they were just using gasoline.

 

I bought Xylene last night. I soaked the coin in Xylene for an hour and the black mark remains there.

I will leave the coin in this state.

 

Nitrous works great in some cars. My main ride it wouldn’t help. First it doesn’t have spark plugs. Chipped and tuned changed the intake and exhaust and it’ll get down the road in a hurry. A little slow right off the line but once the turbo gets going it moves plus it weighs about 10k lbs

 

When I first saw that photo that was my first thought as well. I have a gold coin that has a simular blotch on it. I sent it to ANACS and they said it was a planchet defect.

 

Interesting. I couldn't remove the streak and left it alone and never sent it in.

Perhaps a bit of carbon that remained in the molten gold and then was rolled into a streak ib\n the process of rolling the strip for planchet preparation.

 

This is more of a problem with older coins:


Venice Ducat - Doge Pasquale Cicogna (1585-1595)
Gold, 20mm, 3.50gm