It's interesting to learn that KMT made standard gauge track. AFAIK, they never made any standard gauge trains, and making SG track during the time KMT was active seems like an odd product.
I looked at the Western Division's manufacturer info - a great resource BTW - http://www.tcawestern.org/kusan.htm I didn't see any mention of standard gauge track. I don't know if anyone updates those pages, but this might be an unusual find that they should be notified of.
@traindork - could you post a picture? @CP BOB, do you know approximately when KMT made that track?