The Constantine is a London mint. Just wanted an example of that mint. The Gordian Sestertius just caught my eye. both are coming from Tom Vossen. I don't like ordering from Europe because of the delay. But I have only had one go missing so not so bad.
Good luck on getting them. I don't have a London coin either. But both are nice additions, should you even get them.
CONSTANTINE I AE2 Follis OBVERSE: Constantine I AE3. 315-316 AD. IMP CONSTANTINVS AVG, laureate, cuirassed bust right REVERSE: SOLI INVICTO COMITI, Sol, radiate, standing left, chlamys across left shoulder, holding globe, right hand raised, S-F across fields, MLN in ex. Struck at London 315-16 AD 3.1g, 20mm RIC VII 43
Tom Vossen is one of my favorite dealers with whom I've done business many times. Never had the slightest problem.
I live in the USA. I've ordered 4 coins from Tom Vossen, in 4 separate orders, during 2021 and 2022. 2 coins were ancient Greek, and 2 coins were Byzantine. All 4 orders arrived just fine.