This is a Sketch - CASTLE
from NATIONAL Foundry's 1920's Catalog
Design # 71

SIZE & VALUE are Unknown

Note 1:
Per National's 1920's Catalog, this Doorstop sold for 30 cents Rough or $1.20 Plated.

Note 2:
CASTLE is the name listed in National's 1920's Catalog.

Note 3:
This was not listed as a bookend as other items in National's Catalog were.