Following the introduction of the round 8/0 series of movements in 1935, Elgin introduced the 15/0 series of tonneau-shaped movements. These were used in the thin, narrow watches popular in that era. They look similar to Hamilton's 980/982, and Bulova's 7AP, and others.
Like the 8/0 series, the 15/0 included a 21 jewel Lord Elgin movement, the 538. These were introduced in 1939.
of the most popular 15/0 Lord Elgin models is the one known as the
'Driver', though I've never seen it referred to that way in any Elgin
Much as the straight-cut edges of the 8/0 531 were beveled in the 556, so the edges were beveled in the 559.
The 626 is to all appearances identical to the 559.
EDIT: Okay, I figured it out. The jewels on the 626 are UNSET. Compare the center wheel jewel on the 559 above to that on the 626 below. The 538 and 559 both have the jewels in settings, either brass or nickle (steel, maybe?), whereas in the 626, the hole jewels are not in settings.
you look at the cap jewels, you'll see that some previous worker had
marked each of the cap jewel settings and the adjacent plate so that
they could be returned to the same place. This is stupid, because
they're completely interchangeable!
In 1951, Elgin replaced the 626 with the 670, and also introduced a number of more 'modern' designs, like this 'Drake'.
I DID manage to get one of the movements, which had been stripped out
of a case that probably went to the melter. Whoever sold it probably
got less from the melter than they'd have gotten from a collector, which
makes me glad.
The movements were gold plated, and had a lovely diagonal damaskeening.
last of the 15/0 Lord Elgins was the 675. This was introduced in 1954,
and was just a shock protected version of the 670, which continued to
be made as well. This watch, the Townsman, was one of only a few models
to carry the 675.
shock protection on the 675, and the other 15/0 Shockmaster models, was
a Kif Trior, rather than the Incabloc used on the 8/0s.