Envelope privacy patterns

I collect envelope privacy patterns. Many of these are modern and from the UK but it's quite easy to source ones from the 1970s, sold by people selling to stamp collectors. If you've got an old envelope with a new pattern, send it over!

Envelope privacy pattern — USA, 1979

Envelope privacy pattern — Canada, 1978

Envelope privacy pattern — Denmark, 1967

Envelope privacy pattern — Germany, 1985

Envelope privacy pattern — South Africa, 1977

Envelope privacy pattern — South Africa, 1970s

Envelope privacy pattern — South Africa, 1972

Envelope privacy pattern — Japan, 1970s

Envelope privacy pattern — Libya, 1970s

Envelope privacy pattern — Germany, 1985

Envelope privacy pattern — Australia, 1977

Envelope privacy pattern — Canada, 1977

Envelope privacy pattern — Indonesia, 1978

Envelope privacy pattern — Libya, 1970s

Envelope privacy pattern — Canada, 1970s

Envelope privacy pattern — Japan, 1970s

Envelope privacy pattern — Libya, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — Canada, 1970s

Envelope privacy pattern — USA, 1979

Envelope privacy pattern — UK, 1960s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — USA, 1979

Envelope privacy pattern — Ireland, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — France, 1910

Envelope privacy pattern — Germany, 1900s

Envelope privacy pattern — UK, 1969

Envelope privacy pattern — UK, 1969

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1910s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 1970s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s

Envelope privacy pattern — UK, 2020s