I have not used either of these 2 backs, nor do I know how they came into my possession. They are both for 120 film. The slide catch on one doesn't work very good but the slide catch on the other seems to operate normally. Both dark slides are good.Thats about all I can say of them. I can do more photos if needed.
$12 ffor the both + shipping.
$12 ffor the both + shipping.