What brand of dryer this terminal cover plate belongs too?

[analog>digital]

For the longest time I've been wondering what brand washer and dryer was originally in our laundry closet as both machines were long gone for over 20 years and the only left is the strain relief and cover plate. From what I could tell it belonged to a stackable unit from around 1971 (The laundry closet is made for such machine and the house was built that year). As you can tell it was hardwired to the electrical system. Hopefully, someone recognizes it. Thanks!

 

[dnastrau]

Part number?

Is there a part number stamped on it?

 

[analog>digital]

No, except I see the letters "A-S NYC" stamped on the silver clamp. I was hoping the appearance would help as it can vary by brand.