David,
The whole purpose of the essay was to nail down the correct name for the Equi-Poised pens WITH the gold seal that began in 1930 and ran at least through 1932 (the ones with 4 cap bands (one end band and the 3 cap-lip bands with the center band being the Rhomboid pattern) and the roller clip, which up to now were in dispute. Mission accomplished as far as I am concerned.
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Many of these very pens, identical in every respect did continued in production beyond 1932. Now at least we can nail down the beginning of the run as Equi-Poised. Generally I am OK now that Equi-Poised can refer to them as well as the non-gold seal models you mention. The Gold Seal ones are the same pen in every respect before and after 1932. However, it is true that in 1932, the smaller, non-gold seal pens were the only pens shown in that one catalog with the Equi-Poised name. So from a purely technical point of view the 1932 and beyond pens that walked and quacked like a duck may have been called a goose by Wahl.
Now, The later models with the different cap bands and the different clip you may also be referring to (the ones with 2 gold cap lip bands and the later Doric style pocket clip) which are "outliers" to the main focus of my essay, have been identified loosely as "Round Dorics" by those who focus on the pocket clip and as "Equi-Poised" by those who focus on the shape of the cap and barrel ends. As you rightly point out, these remain to be positively identified.
I have written 10 pages on the broader Equi-Poised issue from 1929 to 1932. There-in lie many insights to Wahl's naming and branding "culture" and a reliable pattern in their merchandizing in this regard. And it did not start with Equi-Poised pens it goes way back to 1918-20 and how they transitioned from Boston models and numbers to models of their own and then to "replacement" models for their top of the line pens without damaging the sale-ability of their dealers remaining old stock inventories. Wahl wrote chapters on the topic in their own dealer literature to re-assure the dealers that they could count on Wahl not to hurt them when the new models came out. It goes a long way in helping us understand their style naming philosophy.
Syd
For the full picto-essay go to:
http://www.lionandpen.com/ Look for: Wahl Equi-Poised Pens in the Pens Past section