Someone tell me what a penguin is for a sewing machine?

Barny, it is a vintage Singer walking presser foot. The concept would be similar to today's walking foot in that it held the layers of fabric together and kept them from shifting while sewing. The Penguin got its name because it has two separate "feet" and when advancing the fabric it looks like a penguin waddling side to side. I'm sure others can describe it more clearly. Lol.

It's interesting the GW employee posting this took a special picture of some bobbins but neglected to bring attention to the Penguin, box and manual. They are probably scratching their heads if someone hasn't explained the interest to them.

Please read the other comments. It went high because of the walking foot.

Let's keep in mind that millions of these things were made in a factory - not by hand - there are plenty out there. Altho the penguin waddling aspect sounds really cute....

I have a white walking foot that looks an awful lot like that black one. Were penguins only black?

And did u noticed the FW at bottom of screen at over $600 ?????

And Miriam ...yes they only came in black, they stood upright behind the needle area whereas those white ones lay down kinda longwise....

I would love to stand my white walking foot up next to a black one and see the differences. This one has no Singer marking. I got it in a box of old attachments. I also have some more modern walking feet. It is modeled by Miss 15-75 my favorite beat up old lady.
[ATTACH=CONFIG]511649[/ATTACH]
and how she is attached:
[ATTACH=CONFIG]511650[/ATTACH]
Every time I shoot a picture I see more to clean - she's had hours at the spa already...

That lot of goodies went for $899.99 + shipping.

I need a time machine so I could go back in time and buy a bunch of these things, then bring them forward. I could fund my retirement just selling them.

Joe