Elgin Grade 307

Here are a couple animated images of an Elgin grade 307.

This is an 18 size movement with 17 jewels.  This example was made in about 1904.

There many more watch images here at my Google+ profile page.

An 18 Size Hampden

Here's a few photos of an 18 size Hampden pocketwatch.

There's a real interesting micro-regulator on this movement.

This movement was made about 1907.