thepolyparrot

I don't think so - I think all of these are "top clamping" attachments except the one on the right side that looks like a regular low-shank, "side clamping" attachment.

I have a set of these that came in a black tin box with velvet lining and it says "Rotary Attachments" on the top.

My bronze embossed White Rotary machine takes this type of attachment, too. The White Rotary was sold in a smooth and embossed version for quite a few years, so there are apparently lots of these sets floating around.

There were other companies which used this top-clamping system and the height between the top of the fork that clamps onto the presser bar and the bottom of the foot are different, so not all top-clamping attachments will necessarily fit a machine made with this system.