All is revealed

Look closely Sinbad. All will be revealed.

The hands and dial came off easily.

The movement quickly gave up its secret.

That is the Seikosha logo. Established in 1892 as the clock making arm of K. Hattori & Co.

That is one of, if not the, earliest trademark stamps of the company that would become Seiko.

Oh and this on the upper left of the front plate:

Kanji?

My careful detective work unearthed clues that the Pony Express folks called this model the B19. It was tough to decipher but the clues are there.

  

What do you think of that wood Dr. Johnson?

1910?

Me neither.

That said the movement is fairly clean and looks like it was bushed as part of a service but those may be original? It has another ugly solder job too. I wonder if it was roughly serviced sometime in the last 40 years or just put in service this way as Sy the Pony Express were cranking these out.

The front glass was redone/done poorly. Perhaps the original was broken. But it's a rough job. Lot's of quick soldering.

  

And more to the point, when I closed the case the glass door mysteriously didn't want to close all the way. Close but the last quarter inch was really hard to close.

Took me a while to see what it was.

That glass... certainly isn't original. It's hitting the arbor that holds the hands. The original glass was domed, no doubt about it. This one is flat.

Lucky I didn't shatter it.

So here's what your horologist believes:

This is an original, "circa 1900" movement from Seikosha shoved into a 1970's oak clock body and glass door.

Could be wrong. Have been before.

I love the story of this clock and having a very early piece of Seiko history. Worth every bit of what I spent on it. And it looks good.

One day I'll give it a proper service but I put it back together and here she is running very nicely, and with great accuracy.

Albeit with the barn door slightly ajar.

Could be worse. Could be raining.