I still cannot confirm that the pen tray is Gossamer pattern, or even by Chance. The oval bowl also mentioned on p.26 could very well be as Anne B sent me a photograph of one on a yellow plastic tray, and since then I got one with the same tray and matching lid, but in green. This seems to date the pattern to the late-1940s/early 1950s.
The photo(?) in the base - I assume this is enameled?