This is a very sturdy vintage washboard. 24" high, 12.5 wide, 1.75 deep.
One side says:
National Washboard Co. No NATIONAL 801
Trademark Red U.S. Pat Off Made In U.S.A.
Memphis Chicago Saginaw
The other:
The Brass Line
Top Notch
Sanitary Front Drain
Tap Board will do the work
I also have a smaller washboard for sale. Buy both and save 10% plus money on shipping.