EditAurora Postage Stamp Trains
The video below is narrated by sometimes Aurora Hobbies spokes-voice Dick Cavett.
Cavett lent a voice to many Aurora toy commercials and was probably one of the best known voices of the era.
The Postage Stamp Train Set was Aurora's attempt at out-shining the OO gauge. Here's an early 1960s commercial for them:
EditAurora Postage Stamp Trains on eBay
Complete sets are often available with the most desirable set being the ones in Tin Boxes.