Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

it Does appear to be a Pearl Zenith.

At almost 3 feet tall it is not really a "model", but a full size working engine.

When you get it sorted out and running, you'll need to build a 30 foot steam launch.

According to the website, drawings are available at $125.00  http://www.pearlengine.com/

Have you tried calling or emailing them?

Good luck with your repairs and restoration.