Well, I suppose no one can guess the Make and Model on this engine.
Given that my railroad will always be the CGW I have always been particularly fond of the Alco S1 S2 ... series of switchers. It is not hard to find plenty of photos and documentation on this equipment during the time when the road was transitioning from steam to diesel. However, my curiosity over the years around the Alco S units and what their predecessors were was always a rather challenging endeavor to uncover historical information. I am sure it is out there, I just have not found it yet.
In 1978 I took a trip to Panama loaded with what I thought was enough 35MM Ectachrome 400 Slide film and went out into the back country not knowing at all what I would fine. A few weeks ago I am still looking for information on Alco and something jogged my memory about those pictures I took which I had not looked at for years. So I went and started scanning/digitizing the slide deck and sure enough I ran across these photos I took and almost fell out of my chair.
I am almost certain the Make and Model is an Alco 300 the predecessor to the S1.
I have seen hand drawn rendering of what this engine looked like but still did not have any actual black and white photos let alone color ones with detail. I think the dead give away here is the box cab. In comparing the details the step plate at the entry door to the cab is so Alco typical of S1 or S2 units. While I think only 11 engines were manufactured of this model, the final two 300 horsepower (220kW) end cab switchers were built in 1938 for the United Fruit Company's narrow gauge railroad in Panama. I took enough pictures in 1978 to pretty well document the operations and equipment. Located in the northern most Provincia de Chiriqui close to Costa Rica, the railroad facilitated the transport of bananas from the plantations to the shipping docks to markets in the states. The X712 is one of two engines but unfortunately the other engine I believe was on duty elsewhere. I think the other engine was number 719. You may note that the engine sports signage "Chiriqui Land Company" not United Fruit or United Brands. I believe by this time in 1978 United Fruit was transitioning and the properties associated with the railroad in terms of ownership and operations went to this new entity. The main yard and port was located in Puerto Armuelles, Panama. When I look at these pictures, if you did not know it was narrow gauge this railroad was so Americana one might not be able tell it was different from a typical railroad in the US mainland. But I guess all the hardware came from manufacturers like Adlake, etc.
Anyway, I was over joyed to have found these photos and I hope you all enjoyed this Train Spotting thread. Needless to say I totally used up all my film on this trip.