Vintage Minatare Collectible HSI Vacuum Pump Model 209 110 volt electric toy lot

Description

What a cool early piece- I think likely was a toy demonstrator originally???? but not sure?  Could have been medical related- I am leaving it to the potential bidders to determine the specifics- this is not tested- looks complete and likely to function- but selling as is and not plugging in-n small fray on a wire- see photos.  HSI brand?  I am not sure but the tag indicates so in my opinion- Please see all photos and make your own determination and be sure to see my other toy listings.
I included a photo with a tape measure to help understand the size.  Anyone out there with knowledge of this piece I'd love to hear from.