A few years ago I posted a list of the earliest automatic balers (where I'm defining it as both automatic pickup and automatic tying). Since then when I bump into information for another baler I've been adding it to my list. Here is what I have so far, stopping at 1955. If you see errors or omissions, please comment!
Some of these models appear to be quite rare, due to some combination of low production numbers, unreliable design, or as in the case of the Ferguson Tractor-Mate, it was recalled.
I haven't compiled the manufactured quantities but I'd guess the top four selling models in this list were the NH S77, NH S66, IH 45 and JD 14T.
1938-1940 Arthur Young baler
1940-1943 New Holland 73
1944-1945 New Holland 75
1944-1952 IH McCormick 50-T, 50-W
1945-1953 Minneapolis-Moline Bale-O-Matic
1945?-? Massey Harris 1 (701 in UK, 801 in France)
1946-1948 New Holland 76
1946-1956 John Deere 116w
1949-1953 New Holland 77
1949-1952 Oliver 8 (and model 16?)
1950-? John Deere 114w
1952-1954 New Holland 66
1952? New Idea W-5
1953 Case NT
1953? New Idea T-6, W-6
1953-1959 IH McCormick 55
1953-1957 New Holland S77
1953-1958 Oliver 100
1954-1958 Case 140
1954 Ferguson Tractor-Mate side-mount)
1954-1957 IH McCormick 45
1954-1961 John Deere 14T
1954-1956 Oliver 50
1955-? Massey Ferguson 3 (703 in UK, 803 in France)
1955-1957 New Holland S66
1955-1957 New Holland 87
Some of these models appear to be quite rare, due to some combination of low production numbers, unreliable design, or as in the case of the Ferguson Tractor-Mate, it was recalled.
I haven't compiled the manufactured quantities but I'd guess the top four selling models in this list were the NH S77, NH S66, IH 45 and JD 14T.
1938-1940 Arthur Young baler
1940-1943 New Holland 73
1944-1945 New Holland 75
1944-1952 IH McCormick 50-T, 50-W
1945-1953 Minneapolis-Moline Bale-O-Matic
1945?-? Massey Harris 1 (701 in UK, 801 in France)
1946-1948 New Holland 76
1946-1956 John Deere 116w
1949-1953 New Holland 77
1949-1952 Oliver 8 (and model 16?)
1950-? John Deere 114w
1952-1954 New Holland 66
1952? New Idea W-5
1953 Case NT
1953? New Idea T-6, W-6
1953-1959 IH McCormick 55
1953-1957 New Holland S77
1953-1958 Oliver 100
1954-1958 Case 140
1954 Ferguson Tractor-Mate side-mount)
1954-1957 IH McCormick 45
1954-1961 John Deere 14T
1954-1956 Oliver 50
1955-? Massey Ferguson 3 (703 in UK, 803 in France)
1955-1957 New Holland S66
1955-1957 New Holland 87