Hi Pinkspoons, :hi:
I wonder, in that case if the design was placed on these decanters and drinking glasses in 1976, to commemorate the date of the introduction of the Plimsoll Line?
I believe 1976 would have been the centenery of the introduction of Sir Samuel Plimsoll's Plimsoll Line.
Although he devised the load line in 1872, it didn't pass legislation until 1876, and that must have been considered a very significant date, so perhaps that is the significance???
Just a thought for you to investigate Kieran.