quote:
Wonder which is correct
In this particular instance, I am
1946 and 1947 no simulated coupler
1948 and 1949 has a simulated coupler.
The TM book referenced above contains the statement about 1949 Berkshires having a "622" style brushplate.
Another interesting reference can be found in the Greenberg guides. I cannot find my copy of the price guide with the article about Berkshires, but it was reprinted in the 1991 edition of "Greenberg's Guide to Lionel Trains 1945-1969, Volume II, Behind the Scenes, ISBN 0-89778-187-2 (other editions have different content)
It has an eleven page article on Berkshires. A picture of an engine with the "622" style brushplate appears on page 68, and a variations chart appears on page 70.
According to my take on the variations chart, the only difference between a 1948 model and a 1949 model is the brushplate.
As I mentioned earlier, I have yet to see (in person) a nickle rimmed Berk with a 622 brushplate, so guess I haven't seen a 1949 model.
While I don't claim to be a Berkshire expert, I did go through a period where I was keenly interested in them, and acquired a number of the variations. I looked at quite a few of them during this time.