14K Yellow Gold 16-Size 19-Jewel
Adjusted to 5-Positions Waltham Riverside Pocket Watch
U.S./Mass.; Waltham; Type; Man’s; SN#15,133,218; CA1906
CASE: The 14K yellow-gold No. 5,218,313 16-size open face case displays a
monogram on the back, 90 grams (TW)
DIAL: This white porcelain double sunk dial features subsidiary seconds
dial, black Arabic hour numerals,
red 5-minute Arabic numerals, spade hands and is signed “Waltham.”
MOVT: The 19-jewel stem-set No. 15,133,218 nickel movement has a lever
escapement, bridge-style layout and is signed.
C 3 (Case is in Very Good Condition)
D 3-43 (The Dial is in Very Good Condition –
M 2 (The Movement is in Perfect Condition)
R 8 (Rarity based on a scale of #1 being
very common to #10 being extremely rare)
Expert’s Opinion: A heavy 14K gold case and an excellent high-grade movement!
Adjustment - Watch adjustment is the
process of correcting those errors in the watch that cause variation in time
keeping. These include temperature influences, variation in driving power and
position of the watch with respect to mechanism such as pendant up or dial up.
Watches with better calibre movements will have been adjusted at the factory for
a number of positions. The usual array of positions include a subset of the
1. Dial up 2. Dial down 3. Bow up 4. Bow down (Not required by Railroad) 5. Bow
left 6. Bow right
These positional adjustments are intended to insure that the watch is just as
realiable and accurate regardless of the position in which it is stored or used.
In addition to positional adjustments, the watch may also be adjusted for
Temperature(heat/cold). Temperature affects different elements in different
ways. Heat will cause some metals to expand faster than others, and cold may
cause some metals to contract more than others. A watch that is adjusted to
temperatures will usually include some combination of metals that allow the
watch to maintain its proper functionality within a larger range of temperatures
than one that is not adjusted for temperature.
Another type of adjustment is Isochronism. As a typical watch spring unwinds the
pressure it exerts on the wheels of the movement reduces. This has the potential
to create a difference in the operating speed of a fully wound watch versus the
same watch in an nearly fully unwound state. Adjustments for isochronism attempt
to compensate for this potential by maintaining the same pressure from the
spring throughout most of the operating range of the watch. This sort of
adjustment was generally seen only on the finest railroad grade watches of the
The general rule of thumb with adjustments is that more is better. However, for
average every day use, a typical unadjusted watch was perfectly adequate.