@SteveH posted:I can confirm that Carnerd3000 is correct. That is the Lake Shore Limited set# 6-1663.
Here are a couple of pictures of the original Box:
FWIW, I added about 16oz of weights inside the #8664 which significantly improved its pulling power.
Here are a matched pair of ALCO's: #8903 (dual motor) and #8904 (dummy) that appear to use the same frame and shell. Not sure when these were made.
Thanks, Steve. I appreciate the photos of the box. The 8903 and 8904 were issued in 1988, I believe. The 8903 has two motors, which beats the 8664, but it has that "big mouth" pilot to accommodate the front coupler, which takes away from its appearance, IMHO. Adding weights to the 8664 is a good idea.