Made By Foundries:

the NATIONAL FOUNDRY -- Design # 148
HUBLEY -- Design # 305

HEIGHT = 8 1/2 inches
LENGTH = 11 inches
VALUE = $250-$400

Note 1:
This doorstop has a bookend that is identical.
The Bookend is Hubley # 408 that is 6 1/2 inches tall by 5 inches wide.

Note 2:
In 1940
, Hubley sold this Doorstop from their own catalog for $15.00 a dozen.

Note 3:
National sold their doorstop unpainted for $1.10
per National's 1920's Catalog.
They also sold paint kits or their doorstops painted.

Note 4:
This doorstop was advertised in N. Shure's 1931 Catalog, page 198
See View AD1
as "The Scotty" with a leach for $2.80
See View Ad2

Note 5:
Shure was incorporated in 1925 Sidney N. Shure
in Niles (suburb of Chicago), Illinois.
The company sold radio kits.
They latter became an audio-electronics manufacturer.
They made wireless microphone systems,
phonograph cartridges, mixers, and digital signal processing.
The company is in business today.