Chris,
Glad you like the ads. Hopefully others will post what they have or can find. I couldn't find much after 1910. All the posts are JPEG files so they can be downloaded and enlarged or printed on ones computer if they can't be read online. There's some interesting stuff in the fine print.
Enjoy,
RR

Richard, Thank you for doing these ads, like Chris said, a lot of these I also haven't seen.I noticed a Hampden railroad grade on a few of the ads that seems unusual to me, the 16S 17J "John C. Dueber".I've seen and heard of the 21J version, didn't know of a 17J J.C.D. Really nice job! Thanks again, Ted.

Ted,

You're very welcome. Here's another.

January, 1898 The Jewelers' Circular and Horological Review

That last one is particularly helpful to me. I have an 1899 New Railway in 21j, and ads that reference it are rare. The New Railway appears to have only been made in 23j for a short time before the 23j Special Railway superseded it and Hampden downgraded the New to 17j.

Oddly, I have a New Railway in 23j and a Special Railway in 17j (it's a very early one from 1889.)

Richard,
Thanks for a nice ancillary piece on these fine watches!
Dave

Here are some more Dueber-Hampden advertisements courtesy of Google Books. To me this first page blends well with Lindells' Factory post above from a year ago.

Thank you All,

RR

September, 1892 The Railway Agent and Station Agent

January, 1902 The Railway Conductor, Volume 19

July, 1902 The Railroad Trainman, Volume 19

May, 1903 Brotherhood of Locomotive Fireman and Enginemen, Volume 34

Nomember, 1903 The Cosmopolitan, Volume 36

March, 1904 Metropolitan Magazine, Volume 19

Thanks again Rich, more great ads!...Ted.

Wonderful Richard and perfect wall paper for a Hampden fan. Thank you.

I have a few more but just have to find them.

Another pre-Hampden ad.

These are from the time period when Dueber case factory was in Newport, Kentucky with offices Cincinnati, Ohio before acquiring Hampden and re-locating to their "twin factories" in Canton, Ohio.