Completely different coin, different emperor, 5x heavier, different mint mark and most important just check the portraits.
To try and answer the questions Roman gold coins really aren't my thing as they're out of my price league but I will say I don't see anything that would indicate yours is a replica. Weight and diameter are ok, wear looks as expected and the style fits the period but I will say if I was a buyer I wouldn't trust photos alone as authentication. I'd need to have the coin in my hand or have a declaration of authenticity from a reputable source.
As for value Roman gold is all over the place, the same coin can sell at the same auction house in the same day for two completely different prices. I did a quick search and found this coin or at least variations of it sold for anywhere between 500 and 4000 euro. These are prices realized in an auction setting. In my experience in Croatia at coin shows and numismatic meetings unauthenticated common gold soldi sell at around 500 euro. I don't know about the variants of your coin to judge if it's a rare example or not. https://www.coinarchives.com/a/results.php?results=100&search=constantius+and+solidus+and+antioch+and+vot
In my opinion this is a variation of either RIC VIII 162 or RIC VIII 168 with the latter being more likely. Hopefully someone with more knowledge of Roman gold verifies this. If not you can always try https://www.forumancientcoins.com/, the community there is much more specialized in ancient coins than Numista and will probably give a more detailed answer.
Hope this helps!
I collect and deal in ancient Roman coin. In case you're looking for affordable ancient coins or need any help with the coins you already have send me a message.
At the highest profile, the bottom layer of metal begins to reveal itself - this is caused by the glove rubbing against the metal
To put it simply - gold tends to shimmer and shine more with rubbing - rather than darkening in raised relief- this is caused by the glove rubbing against the metal-increased caution and professional evaluation of the metal is important - I do not comment on the type (these are not usually cheap coins) be careful.
I agree MIMAEL the face does look off however there are similar coins within this type:
The problems you point out could be due to the light the photos were taken under. Size and weight are good so I wouldn't discard it as fake just yet however I agree this should be taken to a professional to evaluate. With coins like this authentication over photos is very tricky.
I collect and deal in ancient Roman coin. In case you're looking for affordable ancient coins or need any help with the coins you already have send me a message.
I agree MIMAEL the face does look off however there are similar coins within this type:
The problems you point out could be due to the light the photos were taken under.
Yes, my friend, I agree with you. Most of us don't have experience with such expensive coins - and comparing and evaluating with photos is really quite inappropriate.
However, I should have started that it is an immediate opinion - a professional analysis is really in order.
I hand-stamp the same technology at home in the backyard and cast the metal myself (I haven't tried the gold, but I'll probably do it)
I just don't want it somehow I have reservations about the details and I should be more careful - I'm protecting our colleague and his money-compare details:
and now published by you
Even the letters bother me.
That's why I say: watch out for the "orange light" at the intersection.
thank you, cro321 and Mimael, for your detailed replies.
There is no question to buy or not, this research is a favour and for me it's a challenge. The dark looking parts on the pictures are caused by reflection, pics were taken in short distance with my smartphone.
Meanwhile i found a further reference in an old, very general book (J.P. Divo, “Das Sammeln von Münzen”, Freiburg 1963)
description is “Kaiser Constantius II, Solidus, Münzstätte Antiochien”
It is very close to our coin, details of spear, similar reflections.
Also for me there are remaining reasons against authenticity:
The mintmark SMANB, why should anyone split or move the production of some gold coins.
Traces of use are very different, some deep scratches and almost no other signs of use.
At the highest profile, the bottom layer of metal begins to reveal itself - this is caused by the glove rubbing against the metal
and now published by you