Well, I the one I got a a paltry sum of less than 20 dollars arrived last yesterday and I found out it works perfectly on my AE-1. I knew it would work on my A1's/ I have the original 2 I bought new and had recently gotten one with the AE1 and four or five lenses for a cheap price. I decided to use the A1 after last night replacing the battery door, and the light seals and battery and found out it works as if new. So I just installed the new to me Winder A2 on it. Now I have three like new A1's all with winders and a dead stock like new AE1 in my 35mm Canon film bag.