British shell dressings from World War Two and Joint Service Dressings from the mid 1970s onwards are very common, but there is a period between these two points when shell dressings seem to be much scarcer. I suspect that this was because so many shell dressings had been produced during the war that there were millions stockpiled in warehouses and little need to manufacture large quantities for decades to come. There was some manufacture, however, and so today we are looking at a pair of 1960s shell dressings:

This pair of dressings dates from December 1964 and March 1965. It is clear that by this point the British military had adopted the same sealed packets that had first been introduced by Canada in World War II, rather then the simpler cotton bag that had been used previously. Much like both the Canadian shell dressings and later Joint Service dressings, the instructions in the use of the dressing are printed in both English:

And on the opposite side in French:

I suspect that the small number of new shell dressings would have been prioritised for front line needs, and the older pattern used for training and general first aid. These 1960s dressings are certainly a lot more uncommon than either their predecessors or replacements and so if you do come across them, they are well worth picking up.