This prototype:  AE18. 6:00. 2.27 grams.  Siscia mint.
Imitations of this type are extremely common in Britain. However, very few are close to full size. Many are very small. I have seen recognizable and complete examples down to 7 mm. Here are three imitations that are unusual for their large size. They were the only three imitations found among a hoard of about 1000 pieces I had the chance to look through in 1998.
   If you want to see them all at once without commentary (in a new window), click here.

  AE17-16. 6:00. 1.87 grams.
An imitation in excellent style and virtually full size.  
CONSTANT-INPOLIS  [sic, letter "O" missing]
    /ΓSIS in exergue.  [RIC lists only B and D]
RIC Siscia 224 variety.

  AE15. 6:00. 1.79 grams.
A slightly smaller imitation in good style.
CONSTAN-NOPOLIS  [sic, letters "TI" missing]
    Victory with wings of dots
    in Exergue:  PLG  [mark of Lugdunum]
Prototype:  RIC Lyon 246 of AD 330-1.

  AE17. 6:30. 1.83 grams
Weakly struck obverse, slightly crude bust
CONSTA-TINOPIO [sic],
    /TRP in exergue
Prototype:  RIC Trier 523 (there are many similar mint marks)

The main page on imitations of 330-340 noted that Lugdunum apparently minted some official coins of smaller module than other mints. The next piece is of excellent style and correct legends, but is only AE14, which strains the limits of the size of official pieces. I hesitate to decide if this is an imitation:
  AE14. 6:00. 1.15 grams.
Good style and full legend. Is this official and just very small?
In exergue:  PLG
RIC Lyons 273 of AD 335.

AE14. 6:00. Bright green.                                                                                           AE12.  11:30.  Thick.
In exergue:  PLG                                                                                            In Exergue:  garbled, possibly PLG

Four imitations from the English midlands with the distinctive English dark green patina.
All AE14-13.

Seven lousy English imitations. But, if you think these are bad, I assure you that there are many thousands found in even worse shape.  AE14-12-11.
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The vast majority of imitations from this time period combine obverses and reverses properly, but occasionally an VRBS ROMA obverse is paired with the Victory reverse, or the CONSTANTINOPLIS obverse is paired with the wolf-and-twins reverse.
Continue with the page of such muled imitations (page 4 of this subgroup).
Return to the page on GLORIA EXERCITVS imitations and official types of 330-340.  (page 1 of this subgroup)
Return to the page on VRBS ROMA imitations.  (page 2 of this subgroup)
Skip to the page on  imitations from AD 340-348.

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