1966 'Independence' 1s, vertical strip of six being the left column of a sheet with full margins showing '183' sheet number, error OVERPRINT OMITTED on bottom four stamps (save for a tiny fleck of overprint ink on stamp 6), unmounted original gum.
Only ten strips possible from the one sheet that is believed to have existed, and first reported in Stamp Collecting Weekly in April 1966.
Illustrated on p. 491 of The Rhodesian Philatelist no. 28 (January 2009).
Accompanied by a British Philatelic Association Certificate of Authenticity (2013).
An ex Stanley Gibbons stock item.