I had a black Rovex one in a train set for my 5th birthday which would make it 1951 if my memory is correct .it was fantastic,though the plunger pickups were a bit obvious even at 5 .They did their job though .My cousin also got one at the same time and immediately wrapped it in cotton wool and put it away .He then played with mine clumsily .He did the same with my Dinky toys .Forgiven ...never
