Complex sentence: All the stamps of British Somaliland were withdrawn from sale on 25 June 1960; for the week prior to formal unification on 1 July, stamps of Italian Somaliland and Somalia were used.
Split into simpler sentences: All the stamps of British Somaliland were withdrawn from sale on 25 June 1960. For the week prior to formal unification on 1 July, stamps of Italian Somaliland and Somalia were used.