Well unfortunately the lidded trinket pots I have are slightly different to Davidson Chippendale 2507 pots, they are possibly Jules Lang but that's another story.
However, I do have an unlidded Davidson Chippendale 2507 so here are the comparison photos. The pot bases are almost identical but the Mystery Set 98 green lid doesn't quite fit properly on the clear Davidson pot, it's very very slightly too big. Still the glass feels identical in quality etc. I think Davidson could be a candidate for this set.