This is a
Polaroid Close Up Kit #550. You will need it for portrait and close up
photos with some of old folders of the Pathfinder series, the 110 and
120. The kit contains 3 push-on lenses.
The box.
The box contains a leather case for the lenses with built-in tape measure and a notice.
The 3 push-on lenses.
The notice from one side...
...and the other.
The use of the kit needs patience for good measurement. The tape measure helps a lot.