I found old coin

Thanks

 

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I suspect TIF is right. I am not a late Roman expert, but I did a few searches and do not find the letter combinations in acsearch. That does not mean it is not real, just less likely.
A better question might be what is the gold content. Four grams of gold are worth about $180 at today's prices. You can test gold content with Specific Gravity. A home method is not terribly accurate, but good enough. Here is a link to a method.

 

The designs and surfaces.

 

It is very unlikely to be real. Please see a picture of a real example below. It's a medallion of two solidi, and the weight is 8.91g.

Firstly the OP's coin is stated to weigh 4.1g. That would make it a lightweight solidus, possible with wear and clipping, but this type is only known as a medallion of 2 solidi, so the correct weight should be 9.0g. It's more than 50% underweight. That is already one highly suspicious point.

Secondly the style of the OP's coin is simply too crude when compared to the genuine example below. Maybe it could be a barbaric copy? Unlikely. That is a second suspicious point.

Thirdly the OP's coin surfaces do not look struck. Maybe it's just the photos? Still it's a third suspicious point.

Maybe those who believe it to be authentic can share their views?

 

The style isn’t right and the surfaces are not what they should look like. If you look up coins of that ruler from that mint you should be able to compare and see what I mean.

 

Are those breasts? That doesn’t seem right either.

 

Ohhh I can see thanks for showing me
This mean it's not real
Maybe I will sell it for jwalery shop as gold much better
Thank u so much

 

Thanks for ur opinion tomorrow I will tack it to old shop he sell old coin and let him to check it

 

Thank for ur information this help me a lot