I had assumed this for Antonito. I noticed that Los Pinos was a different construction as well but didn't realize it was built by the C&TS (or Friends) also.
One thing I have noticed on the original tanks, while there are plans out there for a general water tower design, very few adhered to them. Im sure the tank and floor are all pretty much the same, but most of the frames and roofs are different on almost every tank. Also, the spouts can differ in design and size, and I have seen at least 6 different types of bands used to hold the tanks together!
Casey