I am not nearly as much into the detail of Canadian nickels as are a lot of others on this Forum. For the obverse, this coin seems to be a product of the re cut master die, because H.M. the Q's hair detail is much more sharply defined than on the original die as supplied by the British
Royal Mint.
Interesting because the original master die for the New Zealand Penny was used for nearly four years, from 1953, where these coins are known as the 'strapless' variety. The 1956 New Zealand 'strapless' penny is a scarce coin.
The hair detail, ear, bodice detail, shoulder fold and shoulder strap are all more sharply defined on the later master die.