Vintage Samigon Zoom Close Up Front Lens Attachment

Description

Vintage Samigon Zoom Close Up Front Lens Attachment.
This lens attachment is likely from the 60s or 70s, but that's simply an educated guess; it was my mother's, she was an amateur photographer, I've no idea when she purchased it, but i remember it as one of the many things I was not permitted to mess with as a kid.
It is in good condition, likely because of its untouchable status, operates smoothly, glass is clear.
I hate to throw it out, so here it is - hopefully someone can put it to use!