In 2019, someone apparently explored MBTA coaches in storage and recorded their walk through on video. As expected, many of the coaches are MBB's, a couple 6xx and 2xx coaches but there are several cars that I don't know the type of.
At 4:37 car number 434 appears. What type of car would this have been, a Rebuilt RDC? And is this the car we see second laters with all the tables? My guess off of what appears on this site http://www.rrpicturearchives.net/rsList ... BTA&Page=2. But very few 4xx cars are listed here and 434 is not one of them. When would 434 have been put in storage? At 6:25 those same types of seats with tables appear again.
There are also a couple different food service cars that appear
At 5:30 there is yet a different kind of seating that does not look familiar. What type / number series of Commuter Rail coach would this seating have appeared in? Same with the seating that appears at 6:48.