The new design has remained unchanged to the present day, replacing the red, white and green shirt used since 1915.
During past four decades many marginal improvements are being made but the basic design and idea remains.
The basic design of a simple canvas top remained, however.
The basic design has remained in production for over 50 years.
The colour scheme was changed for the fourth series, although the basic design remained.
The design remains within its given vocabulary of waves and folds.
Livingstone's design, except for a few minor street changes, has remained largely the same since.
This design remained in production with few changes through 1939.
His design of rectangular stamps remained in use until 1902.
Completed in 1940, this design of the cathedral remains today.