they imported some springers, but the 880/881 was daisy's first msp although they tried many after that.
one thing you might look for is DAISY ADVERTIZEMENTS in magazines of the time, like outdoor life and such. that's part of how i found the 880 variants. these is usually some add copy touting the specs and features. i have seen an add from '72 that proudly introduces the new 880/881, "daisy's first adult pneumatic airguns."
I have an late 1990's or very early 2000's Powerline 856 pellet only. A fun multi pump I should fool with more than I do. They stopped making them around 2004 do to a law suit.