In my
gallery of coins of
Constantine and
his family, I have 16 coins from the “
Gloria Exercitvs” series: 8 of the earlier 2-standard coins, and 8 of the later 1-standard coins. As you are probably aware, the
Roma and
Constantinopolis coins are generally considered to be a
part of this series. If you want to see photos of these 16 coins, look at the bottom of the page brought up by this link:
https://www.forumancientcoins.com/gallery/thumbnails.php?album=5151Below are the
weights and
flan sizes of these coins.
2-standard coins, 330-335:2.84 gm 17.5 mm
2.17 gm 16 mm
2.40 gm 18 mm
2.45 gm 17.5 mm
2.55 gm 17.5 mm
3.14 gm 18 mm (
Roma)
2.56 gm 17 mm (
Roma)
2.35 gm 19 mm (
Constantinopolis)
2.55
average 17.56
average1-standard coins, 335-337:1.52 gm 17 mm
1.59 gm 16 mm
1.82 gm 17 mm
1.58 gm 15.5 mm
1.76 gm 17 mm
1.31 gm 16.5 mm
1.68 gm 14.5 mm (
Roma)
1.49 gm 15 mm (
Constantinopolis)
1.59
average 16.06
averageLooking at the data above, one can see the
flan sizes seem to be about the same in each group, although when averaged, the
average flan size of the 1-standard coins is about 1.5 mm smaller than the
flan size of the 2-standard coins.
The
weights of the 1-standard coins are all under 2 gm, and the
average weight of the 1-standard coins is almost a gram (.96 gm) under that of the
average weight of the 2-standard coins. When we are talking about coins that are generally under 3 gm to start with, a 1 gm difference in
average weight is significant.
Admittedly, this is a small sample size, and there are a number of mints represented here. So, I do not know how much can be inferred from these numbers.
The
flan size of your coin would fit either group, but the
weight is clearly more than 2 grams. Therefore, I would say it is
RIC 370.
RIC 370 is listed as coming only from
officina Q, and the
rarity factor (for what it is worth) is r2 rather than the r5 of
RIC 396.
Other comments would be welcome, especially if you can show how I may have drawn some wrong conclusions from these numbers .
