Greek? coin ID help

[Georges M]

Hello forumers,

I've spend a few hours online trying to ID this coin(pic attached) with no luck! Can anyone help?

[Pekka K]

Civic bronze from Antioch.
Please give size and weight.

Pekka K

[Georges M]

Diameter is 19mm and thickness a hair short of 3mm.

Unfortunately I do not have a scale to weigh it, but compared to other bronze coins similar in size it is quite heavier.

The color is also quite odd. All pictured coins were dug out together. With exception to this one....they are all roman.

[BiancasDad]

Diameter is 19mm and thickness a hair short of 3mm.

Unfortunately I do not have a scale to weigh it, but compared to other bronze coins similar in size it is quite heavier.

The color is also quite odd. All pictured coins were dug out together. With exception to this one....they are all roman.

They all look like they have been zapped or harshly cleaned with abrasives or chemicals

[Pekka K]

I see at least 10 other coins from Antioch in your picture,
so your first coin shown is in good company.

McAlee lists coins of this size as tetrachalkons.

Pekka K

[areich]

Ouch, those poor coins.

[Lee S]

Ouch, those poor coins.

  I acctualy physically grimaced looking at that picture...   

 Georges M, can you give whoever is responsible for the cleaning of this poor hoard a slap from the members of Forvm please...

Lee S.

[Christopher H2]

What would be the preferred method to at least partially repatinate such a bunch? I've found olive oil usually darks the patina when I use it for cleaning. Perhaps a couple months in that?

[areich]

Time. Olive oil is slightly acidic so it it only makes it worse.

[Georges M]

Ouch, those poor coins.

  I acctualy physically grimaced looking at that picture...   

 Georges M, can you give whoever is responsible for the cleaning of this poor hoard a slap from the members of Forvm please...

Lee S.

Purchased as is mate. The person who found them, soaked them for 4 days in a mixture of olive oil and liquid descalent & brushed them daily with a toothbrush.

They actually look better in real than pictured.

Upon buying them I washed them with soap followed by soaking for 5 days in distilled water to get rid of any remaining oil/descalent, and gave them a coat of wax.

It was a hoard of 103 pieces. I will leave them as is since they will be aging in my private collection and not for sale, but I will attempt repatination on a couple that have disfiguring corrosion. Any practical home DYI ideas?

Anyone interested in helping me categorize and identify?