SJC,
Many thanks for starting this topic! I ran HO until about 5 years ago when I switched to O gauge. I was mesmerized by the modern steam engines produced by MTH and Lionel. I was first introduced to postwar engines when one of our daughters bout ma a thrift store 2026 and some cars for Christmas. Since then, I acquired a couple more. One is a 671, that is a very nice engine, but not as nice as yours.
Also many thanks to all the folks who shared advice on postwar engines!! This has been a good topic to save!