Mart,
Giggle--yeah, I know. That's the site of my original link. Their "Marks" page shows the L E Smith marks starting at 1920 and ending 1990's. However, the mark I saw, and is listed on the site, shows no date span. Can we assume it is after 1930, since the mark listed prior to the simple "S" is different? How long did L E Smith use the simple "S" (prior to the circled "S")? That is my question.
Thanks.