Roman coins? need help identifying [résolu]

Two coins I'm looking for help in identifying

Coin 1. 18-19mm in diameter, 3mm thickness, weighs 8.22 grams  

Coin 2. 18-19mm in diameter, 1mm thickness, weighs 2.17 grams

 Coin 1. Similar - N#62791 

Obverse: Laureate bust right, wearing cloak and cuirassed as seen 

from the back - one ribbon turned backwards, the other straight down.

Lettering: ΑΚΓ ΟVΑ ΔΙΟΚΛΗΤΙΑΝΟC CΕΒ 

Reverse: Nike advancing right, holding wreath and palm over left shoulder, 

star in right field (officinea), L-Δ across fields (= year 4 = 288)

Lettering: L Δ 

 Coin 2. 

Thanks ZacUK, 

are you of the belief that both are replica's?

 Not sure - maybe other members know, and can find the second coin on here. 

Constantine I for the second, RIC.335 :

https://www.nummus-bible-database.com/monnaie-108610.htm

N#372676

🙂