It measures about 8.5X4/5", weighs about 15-1/2 ounces, with beveled edges, and is beautifully engraved with:  "WALTHAM WATCHES WHEN PLACED IN COMPETITION WITH OTHER MAKES, HAVE ALWAYS RECEIVED THE HIGHEST AWARDS, NOT ONLY IN THIS COUNTRY, BUT AT ALL FOREIGN EXPOSITIONS."

I was not able to find another Waltham Sign like this.   However, I did find a 1912 newspaper advertisement, that was published in the Whiting Journal, Whiting, Kansas on June 28, 1912 with a very similar message.  That ad reads:   "If you want a watch that you can be proud of - carry a Waltham Watch   The Waltham has been awarded highest honors at every International Exposition and has taken every gold medal offered in America since 1875.......".  A photo of that ad is attached.

In 1876 Waltham Watch was awarded the first gold medal in a watch precision contest at the Philadelphia Centennial Exposition, also called the First World's Fair.

This is a very rare antique metal sign, with beveled edges, beautifully engraved - in antique condition is as shown.  It would make a wonderful gift for a Waltham Watch Collector, a Waltham Massachusetts Collector, or Sign Collector, or Advertising Memorabila Collector.

I do not see any maker's info or metal marks on the back (see photo of the back)..