According to this site the rounded Tomy logo was in use from 1979-2003 (shows various other logos as well):
http://logos.wikia.com/wiki/Tomy
The "Museum of Plarail" site shows a multitude of older items:
http://www2u.biglobe.ne.jp/~akeda/DOLL/purarail.html
Various vintage catalog scans can be found here:
http://www2u.biglobe.ne.jp/~akeda/DOLL/f...arogu2.htm
None of the pages shown contain either Disney set, however some do show the train (1983-1989) and accessories from the no. 2 set (1985-86) as separate sale items.
So it appears these sets are from the mid-80s.
http://logos.wikia.com/wiki/Tomy
The "Museum of Plarail" site shows a multitude of older items:
http://www2u.biglobe.ne.jp/~akeda/DOLL/purarail.html
Various vintage catalog scans can be found here:
http://www2u.biglobe.ne.jp/~akeda/DOLL/f...arogu2.htm
None of the pages shown contain either Disney set, however some do show the train (1983-1989) and accessories from the no. 2 set (1985-86) as separate sale items.
So it appears these sets are from the mid-80s.