My White Rotary Treadle was electrified too when I first got it. The motor was quickly removed (still in the garage, I believe) and all the treadle parts were intact. Wondering why someone would bother to remove them to add the motor and electric bits? Seems like a lot of extra work and makes the treadle base look awkward. The base in the op pic is the same base that came with the 66 I bought for my sister for $5. The machine date was 1925.