The Simplex SJA series of front derailleurs consists of at least 6 models, 102, 103 (both band-clamp type) and 222, 223, 222CX, and 223CX (the odd side-mount braze-on type). Models ending in '3' have deeper inner cage plates and are designed for triple cranksets. Not really sure of the difference in the CX designated models, they look the same in the catalog illustrations but have different body part numbers, even though most other parts are shared. The SJA 103 is more rare or harder to find. I have all but the 103 in stock, so the others are not too rare around here.
Wayne
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Wayne Bingham
Velo Classique
PO Box 2069
Purcellville, VA 20134 USA
540-338-8376
http://www.veloclassique.com
>>>>Noah John Gellner <ngellner@gmail.com>
Is the Simplex SJA a rare front derailleur? I have been looking for one for
a while. I thought I had seen a few pop up on eBay but since I started
looking in earnest, nada.