HEIGHT = 8 1/4 inches
WIDTH = 5 1/4 inches
VALUE = $150 - $225

Marking
103

Note 1:
National sold their doorstop unpainted for 45 cents or electroplated with brass, copper, or nickel for $1.80 per National's 1920's Catalog.
They also sold paint kits or their doorstops painted.

Note 2:
Also, Made By:
the Albany Foundry -- Design # 3
Hubley -- Design # 32
All shown on this website