In June/July 2015 AARP magazine there was an article on page 58 where the author as a 7 year old Cuban child was put on a plane for Miami FL. Unknown to him, his father had quietly removed the child's beloved steamer and tender before departure. Author was heart broken thinking he had mis placed or it was stolen. Fifty years later he had a chance to return to Cuba and met up with his cousin who returned the engine and tender! The father had passed it to his brother (uncle) who in turn passed it to his son (authors cousin) with instruction to give it to the author if he should ever come to Cuba.
Unfortunately no way to link to article or scan the picture (which would probably make details washed out). However, looking at the photo. it appears to be a die cast 2-6-4 or 4-6-4 steamer with what looks like under magnifying glass 1438 cab number, but your guess good as mine. The bell is cast on and tender lettered for Santa Fe and its draw-bar is hook shaped.
Higher end Scout set or lower end starter set maybe? Guess would be mid 1950 era Lionel engine but not sure.
So all you ARRP readers get out your magnifying glass and solve the mystery.