I would think the graphics on your playfield (names of destinations with famous icons of those cities) are original, dd. Not quite the same, but similar to the first one I posted, which may have been over-painted following the same basic pattern. I wonder if it's original on coin-op's game.
Anyway, it seems likely, being a British game, the makers would have had a British transatlantic airline in mind. The aircraft pictured is not a seaplane, so this points to a post 1949 date:
BOAC was also permitted to spend dollars on six new Boeing Stratocruisers for its key transatlantic routes from October 1949, offering a double-deck non-stop eastbound service from New York City to London Airport (later Heathrow). However, because of the prevailing westerly winds, the westbound flights needed re-fuelling at Shannon and Gander before reaching New York.
https://en.m.wikipedia.org/wiki/British ... orporation
I think the top flash should be in the style of a period map showing the destinations. I still feel I've seen a picture of this, maybe on an old B/W photo.
