XS712 RAF Hawker Siddeley Dominie

My dad owned a publishing company from the 1970's till 1990 when I took over and ran it for another 10 years. We produced booklets for the Royal Air Force. The books were issued to new arrivals to numerous RAF and Royal Navy establishments.
In the early days these books were printed on letterpress machines. Any photographs for publication needed to have halftone printing block made. This is one of those blocks; copper plate mounted on wood.
I picked up 3 large boxes of these printing blocks from my mum's garage recently and started sorting them out today.
This particular aircraft, XS712, flew in various Squadrons including 55 Sqn at RAF Cranwell. Now it's located at Humberside Airport in a ground instruction role.
The extra shows the printed result that was taped to the block. Probably last touched over 40 years ago.