Complex sentence: In 1964 a new definitive set was issued depicting Shaikh Isa bin Sulman al-Khalifa and the Bahrain Post Office fully took over from Britain on 1 January 1966 when a further definitive set was issued.
Split into simpler sentences: In 1964 a new definitive set was issued depicting Shaikh Isa bin Sulman al-Khalifa. The Bahrain Post Office fully took over postal services from Britain on 1 January 1966 when a further definitive set was issued.