Ulster Ceramics: La Trinidad Valencera commemorative jug, 1588 - 1971.

As close as I am likely to get to "Genuine Proper History" .
This is one of 200 jugs made by Ulster ceramics to commemorate the salvaging of La Trinidad Valencera, one of the ships in the Spanish Armada, sent by King Philip to invade England in 1588. "Best laid plans" etc. having been thwarted, the remaining Spanish ships tried to return to Spain via the scenic route - round the north of Scotland and then down past Ireland. The Trinidad Valencera ran into trouble off the coast of Derry and sank.
In 1971 the City of Derry Sub-aqua club set about salvaging the ship. One of the huge guns had the designs that are on the jug cast into the bronze barrel. When the salvage was complete 200 jugs were SOLD to the members of the club in commemoration of the event.
Shiver-me-timbers and call-me-Francis, this is only one of those jugs, from the boot sale in Cambridge this very morn. It has a crack but it is not noticeable and I am somewhat in awe of it.