In 1934 he provided the reverse designs for the new quarter rupee, half rupee and one rupee coins of Mauritius. These were added to its existing set of one, two and five cents, which had not been designed by Kruger-Gray. A red deer appeared on the half rupee and the coat of arms on the rupee, while the quarter rupee depicted royal emblems.
A new five cents design, by Kruger-Gray but closely modelled on the prior design, was issued in 1942. New one and two cents designs, using a similar design to that of the five cents ,were issued in 1943, while in 1947 a ten cents coin was issued for the first time. These were all designed by Kruger-Gray, but they are very simple designs, modelled on what went before. It is a pity that Kruger-Gray did not provide some more interesting designs, but perhaps he was only following the requirements of the Royal Mint.
N.B. Several of these original designs still appear on the coins of Mauritius to this day. Talks were held in the early 1970s about possible alternative designs for Mauritius, but unfortunately these were never adopted. To see which exotic species were considered for these designs, click on the link below: Mauritius: 1970s proposal for new circulation coin designs