This 1961 made private cover affixed pair stamps cancelled S/R Seremban B cachet send to Canada. 
 After the independence of Malaya, only one commemorative set was issued in 1958 to commemorate the 1st Anniversary of Independence.
 The last time that Malaysia First Day Cover cancelled in Singapore is on 01 December 1966 for the Malaysia Plan issue.
Singapore was seperated with Malaysia on 9/8/1965 and Malaysia First Day Cover continued to cancelled in Singapore after Singapore independent.