SN 367267
Housed in Standard Hunter Case
Any idea which keystone this is. Number jewels etc.
Not currently running and am trying to figure out if it is worth putting money into as I do not repair watches myself

David See page 312 of the 2012 guide to watches.
It's listed there. It's a dustproof model. Jack

I know it is the dustproof model. Which one of the four HC is it? Can anyone tell me how many jewels by the serial number?

Should be a 15 Jewel David based on the movement being marked adjusted, no sure way of telling with-out lifting the dial, as most of these were in 11-15 jewel variants. On price, they are listed very low in the Fat book, although saying this, all the ones I have seen do much better then their list price.

Regards,
Bila

David, it appears your Keystone dustproof is complete all the way to still having the Mica "window" over the balance wheel. It is probably 15 Jewels. I agree with Bila, a dial removel (complete cleaning and restoration?) would confirm that. If it runs, I also agree with Bila that you have a most valuable collectibe! Far in excess of the "Fat Book" which shows it at barely US$100.00

GOOD LORD! The CASE is worth $150.00! A running Movement with a decent dial is worth at least that again!

It is the 1st one that shows in the 2013 PG David.

Keystone watches are good picks, they are under-priced. Just buy one in better condition.

regards,
bb

David,
If you need someone to rebuild that for you, Dave Abbe's your man. He rebuilt my Grandfather's Lancaster for me. New staff, center wheel and I don't know what all.
And it's a plain Jane, compared to yours.

Hello Dave:

It would be interesting to see some more pictures of your watch. Here is my 18 size, 11 jewel, Serial No.331552, manufactured earlier than yours, I bought it back in 1986 it has a single sunk Roman numeral dial marked Keystone Watch Co. with spade hands.

Larry

Case and movement.

Movement close-up:

It is housed in a yellow gold filled J. Muhr & Brothers Philadelphia Pa case, with a keystone emblem on the case from, and keystone with front view of the steam locomotive emblem on the back. It reminds me of the front view locomotive scenes that Hamilton later used in a lot of their advertising. From what I've researched this watch was available from a watch club society that you could buy the watch from making monthly time payments. Some of these Keystone watches had the same locomotive you on a celluloid dial, I have seen examples, but they usually are faded from time and look washed out.

The first watch company started in Lancaster, Pennsylvania by John C, Adams was The Adams & Perry Co. making 20 jewel movements in three finishes gilt, nickel, and two toned with a gilt pillar plate and nickel top plate with a two-tone balance cock. The Keystone Watch Co. continued making a high-grade 20 jewel, model I found one a couple of years ago it has a single sunk Roman numeral dial with pierced keystone hour and minute hands. The second hand has been replaced

Here is the movement of this pocket watch a Keystone Watch Co. 18 size, nickel dustproof, 20 jewel, lever set Serial No. 316111 circa 1886.

Movement close-up with the dustproof mica window.

These are marvelous watches indeed, much history connecting them to later very successful watch makers. I have had several through my collection too, a couple are below;

The Patented Micro-adjust for the "Dustproof" version of this design is the most extraordinary things many of us have seen. Evidently meant to insure (in the customer's "minds eye") the full protection of the "modern" exposed escapement movement from "pollution" by dust, etc., etc., while permitting precision calibration.