Estes has had many Big Bertha variations over the years, now a two stager!
I've seen a few two stage Bertha flights on the forums over the years, it's now in a kit for all.
Lots of balsa and decals!
The retro checkerboards remind me of the generic decal sheets from the 1960s.
There is some gap staging on this model.
The best feature are the new 18mm engine screw-on retainers.