No doubt, that's true. But, what replaced the capers among the culinary tastes of America? (I don't think of capers as an ethnic taste back then, though that is the section to find capers these days in the grocery store.) It's difficult to understand how an interruption of <10 years could change tastes so extensively. Of course, it could be that capers continued to be imported in generic, colorless glass bottles instead of the distinctive forms of the past.
Love to find one, Harry. I have 1 and it's not special. It has an early Mason's logo stamped on the base (looks like the iron cross), that's it. I have it in stored away. It's a plain and aqua colored bottle. When I can go through all of the boxes of bottles I have, I snap a pic.