BB's are all the same size .175 for all the BB guns.
They are both the same size. .177
The Daisy model 102 Cub shoots a .175 BB it was made between 1952-1978
No it's still the same size .175, often referred to as .177
The rifle was made between 1957-58 and most likely uses the common .177 BB
NO the Daisy Powerline 1200 is strictly a BB pistol that fires a .175 size BB not a .177 pellet
If you are asking about Daisy BB guns not rifles or any other brand made by Daisy. then I would have to say the Daisy powerline models 5502 and 5503 are the fastest Daisy BB guns at 430 FPS. The Daisy 880 and several other models reach 750 FPS. But these are rifles not BB guns like you asked in this questiion.
Which model, what is the condition of the BB gun or is it a BB rifle..
Daisy started in 1895.
A Daisy pistol model is a hand held gun like the model 15XT that shoots BB's
c c c bb c
.177 BB Cal
It sounds like a Daisy BB gun.