Hello again Jayne, if you look in the Glass section I've posted a Hermanova lidded dish of the same pattern. I'm sure it's a match to Mystery 145 which I hope can now be attributed to Hermanova.
Hi NevB, yes I've found the thread, here is the link,
https://www.glassmessages.com/index.php/topic,69715.0.htmlYour lidded dish is certainly a match to the finial and starburst in the base of Mystery Trinket Set #145, also butter dishes were originally round to match the butter pat shape and later changed to rectangles as butter started to be manufactured in the rectangle shape, so both your dish and the #18610 image above could be butter dishes.
hello again Jayne, I meant to add that the tray in Mystery 145 has the same central pattern but the rim is actually a zig zag pattern and not a curved/scalloped? one. Although not obvious the pots in Mystery 47 also have the zig zag rim like the ring holder.
I'm not quite sure what you are suggesting here, trays from Mystery Trinket Sets #145 and #47 both have the same shaped edge, they are the exact same size and shape overall, I just went to double check on my own pieces, the only difference is the base pattern. The pots and ring holders differ in each set as you say. If you mean both sets are likely by the same maker I'd be inclined to agree.
Also there is a honey dish here Stolzle Pattern #18750 which I believe matches Mystery Trinket Set #47
https://www.glassmessages.com/index.php/topic,48082.0.html