Tecumseh Engine ID

[cpurvis]

Since this thread has what I consider to be the most appropriate title, I'm going to ask this:

Where are the engine markings on Tecumseh engines? In my case, I'm asking about a 10 hp horizontal shaft used on a Porter Cable generator.

edit: This doesn't help me but it may help others whose engines were made 2004 and later: https://www.jackssmallengines.com/jacks-parts-lookup/tecumseh-model-locator.aspx

Here's a more complete list: http://www.tecumsehcarburetorguide.com/engine-identification/