HEIGHT = 5 3/4 inches
WIDTH = 6 inches
VALUE = $200 - $300

Note :
You could buy this doorstop 3 different ways per the 1920's National Foundry Catalog

1. Un-Painted (Black)
For 40 cents, then, you could paint the doorstop yourself with a kit (paint & instructions) from National

2. Painted

3. Plated
with copper, brass or nickel for $1.20