Differences between Columbia A and AT?
Posted: Sun Dec 16, 2018 1:52 pm
I’ve long thought that the only differences between the Columbia model A, and the model AT, are twofold:
1. A has a plain, unornamented case, which although it overlapped to the early ATs, it soon went away and became slightly more ornate.
2. AT has a spring barrel, but the A has an open spring, with otherwise identical motors.
But then this A appears, and it has a spring barrel:
https://rover.ebay.com/rover/0/0/0?mpre ... 2749881040
Anybody know what’s correct?
1. A has a plain, unornamented case, which although it overlapped to the early ATs, it soon went away and became slightly more ornate.
2. AT has a spring barrel, but the A has an open spring, with otherwise identical motors.
But then this A appears, and it has a spring barrel:
https://rover.ebay.com/rover/0/0/0?mpre ... 2749881040
Anybody know what’s correct?