George,
One of our engineers was 84 years old, Jorje. I asked him, with tranlator, about the mallets. He also said Esquintla.
Reportedly, they just didn't fit in here. The last years, they were stationed out of Esquintla. Case in point of them not fitting - they were bigger than the still existing turntable in Esquintla. They were originally intended for the hill east out of Guatamala City, but weren't liked there. So, they moved to Esquintla were they were not liked either. Sad to see them gone since there is SOOOO much else remaining.
And Taylor - I looked for a locomotive dome flower pot - no luck.