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21 Jewel Waltham Riverside With Rare Railway Dispatcher Dial, 16 Size, Rolled-Gold-Plate, Open Face, Lever-Set, Railroad #28,927,676 C. 1934 Adjustable: 
This strong running Riverside movement is in beautiful condition with fancy damaskeening and gold lettering. It is presented in a short stem screw back/bezel case which is Near Mint Condition. Up front, there is a scarce dial which is signed “Railway Dispatcher” over the subsec. dial and is marked “Waltham 21 Jewels” at center. The dial is Very Fine Condition with Arabic hr. chapters and blue spade pointers.  RR32007-84 


dial and movement are very close to mint , the case is the same.
the watch was cleaned and serviced just previous to listing.
we purchased it in a large collection a few months ago from a gentleman in louisville , kty.
hope that is of help     thx reg       

Rolled gold plate is accomplished by mechanically plating or fusing a base metal sheet with a sheet of karat gold, at least 10K fineness. The karat gold covering is less that 1/20th of the total weight. Gold filled is the term used when there is a heavier coating of gold. Sheets plated by this metal were then cut or stamped into jewelry items.\


Gold-filled jewelry is composed of a solid layer of gold bonded with heat and pressure to a base metal such as brass. Some high quality gold-filled pieces have the look, luster, and beauty of 14 karat (58%) gold. By definition, the minimum layer of karat gold in an item stamped GF must equal at least 1/20 the weight of the total item. 1/20 12kt GF is the most common stamp you will find on gold-filled jewelry. 10kt and 14kt are also common karatages. Gold filled items, even with daily wear, can last five to 30 years but will eventually wear through. The gold layer on gold-plated jewelry varies greatly depending on manufacturer, so there is no single, simple comparison. Gold-filled items are 50 to 100,000 times thicker than regular gold plating, and 17 to 25,000 times thicker than heavy gold electroplate (sometimes stamped HGE or HGP -- usually found on flashy cubic zirconia


A railroad watch had to be open faced, size 16 or 18, have a minimum of 17 jewels, adjusted to at least five positions, keep time accurately to within 30 seconds a week, adjusted to temps of 34 to 100 degrees F.  have a double roller, steel escape wheel, lever set, regulator,  winding stem at 12 o'clock, and have bold black arabic numerals on a white dial, with black hands.


Minimum serial numbers:  In the 1940's, some railroads specified minimum serial numbers of the different watch grades for acceptance.  This might have been due to the increasing use of the diesel-electric locomotive.  These generated large magnetic fields and the anti-magnetic property of Elinvar, and its equivalent used by Waltham and Elgin, may have been significant.  This is possible because the minimum serial numbers that were specified in the standards match up pretty closely with those of watches having these materials in their hairsprings.  However, there is enough disparity that this might not have been the prime reason.   Min. Waltham Vanguard 23 jewles 31,328,730 s/n min.


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