In 1929 Lionel cataloged the 428/429/430 passenger cars with the 9 and 9E in orange. The loco is common, but the orange cars are quite difficult to find.
Not shown in the catalog was a dark green version that only comes with a hand reverse. The dark green cars that come with the 9 have orange windows rather than the maroon windows seen with 380 and 380E sets made in 1926-28. In this case the loco is rarer than the cars. Some collectors think the orange window cars came only with the 9 sets, but there are lots more sets of orange window cars than locos.
I bought this set from the original owner's grandson a few years back. While I don't collect the trains from the late 1920s anymore, this is a set my dad and I never had so I kept it to run on the layout. I rewheeled it using the black wheels Lionel made in the early postwar period, and it runs great.
Here's some photos of the set with the 380 set:
Note that the earlier observation has a different platform without the celluloid insert and marker lights.
The loco:
The 9 loco does not have an added weight, but the 380 loco does. You can see the weight in this photo:
Here's the boxes for the 9 Set. None of the boxes have dates.
Added information from thread below. . .
The dark green cars are different in a few ways other than the windows.
I showed the different observation platforms. The seats are different. The early cars have mohave seats, the later orange window cars have apple green seats.
Here's a view inside:
The later car has an extra bulb socket from an
American Flyer car lighting set. We talked about that elsewhere on the forum.
Here's a third difference with the cars:
The earlier cars have an added embossed ring at the top of the end on either side of the door. All three cars have these rings.
I'm not all the maroon window cars have this embossing. It might just be some cars, and I have the rarer version? If you have a set of cars without the embossed rings at the top, let us know and I'll update this section. This set runs really well. I'll get the 380E set running and do a page for it.
Here's another 9 set with an Orange door 429 combine:
See down in the thread for information about this set.