British Medals of World War Two:

The France and Germany Star

Photograph above. original on the left, copy on the right.
observations:
The ring on the copy is brass coloured and larger. (note: some original late issues have large rings)
The central area is more raised in the copy.
Ring suspension area is thinner in the copy. (not a  reliable indicator)
Pebbling within the circlet is more coarse grained in the copy.

Note: both stars were cleaned before taking  more photographs. It was noted that the copy had had some form of artificial aging finish applied. This was not 100% removable and traces are visible in the photographs of the copy.

Two photographs above; copy top, original bottom.
observations:
Again, coarse nature of the circlet pebbling evident in the copy
Letters have a wider, clearer, flatter surface in the original.
All the letter shapes are different between the two.

Two photographs above; copy top, original bottom.
observations:
The Crown's Fleur de lys in the copy are weak and asymmetrical.
There are five full pearls/beads in the crowns centre on the copy, as apposed to four on the original.
Crude lumps of metal evident joining the "G" to the circlet rim and the "I" to the "R" in the Royal Cypher on the copy.
The outer wall of the circlet has a sloping appearance on the copy.

Photograph above; original left, copy right.
observations:
The copy is thinner.
The hole for the ring is larger in the copy.
The copy ring looks brassy.