Billon

[ddd]

Can u tell me who is the emperor?

 

[ddd]

Can u tell me who is the emperor?

View attachment 2247942

 

[AU Seeker]

This a job for @Mackaydon

 

[Mackaydon]

In that condition, you might consider carefully cleaning the coin if you get no positive responses.
Then repost the pics and see what happens.
Don in SoCal

 

[ddd]

In that condition, you might consider carefully cleaning the coin if you get no positive responses.
Then repost the pics and see what happens.
Don in SoCal

How should i clean this? The black layer is very stubborn.

 

[mrwiskers]

You can try 100% acetone (inexpensive ... USA: Walmart, Target, other stores, or their European equivalent...) ... make certain that it is 100% acetone, not nail polish remover. Be careful not to spill the acetone on countertops, anything plastic, anything with a painted, or oil finish. Best to do this outside, or in a porcelain or stainless sink.

Place the coin in a small glass (not plastic) jar, completely cover the coin with the acetone, & secure the lid. Allow anywhere from a week to a couple of months for the acetone to loosen the gunk on the surface. Patience required.

Periodically remove the coin & attempt a cleaning with a very soft rag & distilled water, or use a wooden toothpick to carefully remove the gunk. If no success, return the coin to the jar, adding more acetone to cover, if required. Again, patience required. A six-month soak for old (ancient) coins is not unusual.

Acetone will not damage the coin's surfaces. It will remove organic gunk, but will not remove verdigris, or other oxidation toning of the metal.

Again, acetone can damage the surfaces of a lot of household items, so, best to do this outside. It will not harm your skin, just make certain it's evaporated, or washed off, before handling anything ... hope this helps...Congrats on a nice find ...

 

[Treasure_Hunter]

Moving to "what is it", this forum is " Today's Finds".

 

[pepperj]

View attachment 2247943

You can do a passive restoration using 2 parts olive oil and one part lemon juice.

Some of the Romans silvers take just a few days, and some take years but the results are stunning.
This was shared on another detecting site in the UK by a leading expert in Roman ID by a Spanish chemist. I have seen lots of silvers over the past 18 yrs restored by this method.

So put the coin in a cup on a cup warmer, as the mixture turns dark change it for clean oil/juice.
I have had 3 silvers cleaned up this way, and one I could barely make out any detail on the coin because of the crust.
Patience is the key in this process, remember it's been buried for 1700-1800 yrs-so what's the rush.

 

[cudamark]

You can do a passive restoration using 2 parts olive oil and one part lemon juice.

Some of the Romans silvers take just a few days, and some take years but the results are stunning.
This was shared on another detecting site in the UK by a leading expert in Roman ID by a Spanish chemist. I have seen lots of silvers over the past 18 yrs restored by this method.

So put the coin in a cup on a cup warmer, as the mixture turns dark change it for clean oil/juice.
I have had 3 silvers cleaned up this way, and one I could barely make out any detail on the coin because of the crust.
Patience is the key in this process, remember it's been buried for 1700-1800 yrs-so what's the rush.

Won't the oil and lemon juice separate?

 

[mrwiskers]

Won't the oil and lemon juice separate?

...&, another question...will the acidic lemon juice eat away at the copper in this coin? &, will it cause verdigris down the line? ...

 

[cudamark]

...&, another question...will the acidic lemon juice eat away at the copper in this coin? &, will it cause verdigris down the line? ...

It will eat both copper and silver if you soak it too long.

 

[ddd]

How about sodium-thiosulfate?

 

[pepperj]

How about sodium-thiosulfate?

1. Preparation: Mix approximately 1 teaspoon of sodium thiosulfate with 100ml of warm water.
2. Soaking: Submerge the coin for 30 minutes to several hours.
3. Mechanical Aid: Use a wooden toothpick or a very soft toothbrush to gently nudge loosened deposits during or after the soak.
4. Rinsing: Thoroughly rinse the coin in distilled water to stop the chemical reaction.
5. Post-Treatment: The chemical can leave a yellow or greyish tint/tarnish. Some users remove this light surface film by gently rubbing with an eraser or just their fingers.