These scans of the Newfoundland set perforated were provided to me by Barry Senior of Newfoundland. The lower picture shows a 4c Perfin stamp (AYRE) on an Ayre envelope. The perfin on 7c and 24c stamps is very rare. Both 4c and 5c are known on cover.
More information about Perfins on 1935 Canadian Silver Jubilee stamps can be obtained from Barry, who is also chair of the BNAPS Perfin Study Group