Elgin Grade 62, H. Z. Culver

Here we have a named Elgin movement. 

It's a Howard Z. Culver,  grade 62, 18 size, 15 jewels, made about 1867.  

The plates are stained in a way that has chemically altered the surface, causing pinkish spots of oxidation.

The serial number of an Elgin movement is also typically stamped under the balance cock. There is something interesting on this one though. There is another number that has been hashed out.

One of the teeth on the ratchet wheel is broken. It will still function though. These parts are not exactly laying around, so it's best to go with what we have originally if at all possible.

Note that the serial number of the movement, 3450, is stamped on the ratchet wheel clamp. It matches the number on the top plate.

The Z in H. Z. Culver stands for Zoroaster.