HEIGHT = 4 1/2 inches
WIDTH = 9 inches
DEPTH = 3 inches
VALUE = $300 - $475

MARKING :
132
Both Parts are marked. You can see the 132 on the top piece's left side in the back view.

Note 1:
As noted in National's 1920's Catalog: "Radiator Water Cup" -- Price unpainted for 50 cents or electroplated with brass, copper, or nickel for $1.80

Note 2:
They also sold paint kits or their doorstops painted.

Note 3: -- Way the Device Works
This was a cast iron device that sat on top of a room's radiator in the winter. Water was poured in its tray portion. When the radiator got hot, the water would evaporate and put moisture in the air of the room for comfort.

Note 4:
Cast Iron Device consists of 2 pieces Open tray area measures (9"X 2 1/2"X 1 1/2"), Weighs almost 4 lbs.

Note 5:
Device has 4 feet with a groove in each The grooves fit on top the ridges of the radiator fins for stability.

Note 6:
There is a very similar cast iron piece LADY in CANOE, a Doorstop.