117, an SW1001 switcher, arrived in London early in 1994. Initially it
appeared as if its stay would be short in duration, since these two
views at CN London East were taken merely 3 weeks apart. However, the
addition of some type of spark arrestor during this interval probably
was a hint that a longer stay was in the offing. Later in the year the
unit had its number changed to GM 1, and a maple leaf flag showed up on
the black band at the bottom of the cab side. Shortly thereafter, a
full Diesel Division paint job was applied.
Number 117 was back at London East again on April 04, 1994. In the interim it has gained a spark arrestor, and has had at least one trip around the GMD wye.