And I came across this announcement-
"Speaking of locomotives, perk up diesel and traction fans. We are taking reservations for the following locomotives, TT Scale-- no money required as deposits on these.
#1 G.E. U 30 B
#2 Electro motive FP45
#3 Baldwin-Westinghouse, B-1 Steeple Cab Locomotive
#4 Milwaukee Road EF Series boxcab electrics
Prices and deliver dates to be announced"
This was in the Precise Scale Models newsletter dated June 9 1971! Precise Scale did go on to purchase HP Products TT scle division, along with several other TT companies. But it doesn't look like any of these ever got close to production.