5 covers w/ Centennial Stamps, various rates, each cover has Hibrite stamp(s):
65c Registered Airmail to Germany on #10 used Feb 9, 1973 – 15c is Hibrite
48c Special Delivery to Vancouver on #10 used Nov 4, 1971 – 2x 20c are Hibrite
15c Airmail to Germany on #8 used Feb 7, 1973 – 10c is Hibrite
57c Registered to Toronto on #10 ,7c Postal Stationery envelope, used Sep 28, 1971 – 50c is Hibrite
58c Registered to Toronto on larger 6 1/2 x 9 1/2 inch envelope, used Jan 7, 1972 – all stamps Hibrite
