Another GTS Mystery set 27 in blue but with more conventional ‘stick’ candleholders.
Then another GTS Mystery set 27 in an unusual dusky pink, also with the conventional ‘stick’ candlesticks.
The loop-handle candleholders have been seen in other (quite different ) sets, and there is already a topic thread about their occurrence at
http://www.glassmessages.com/index.php/topic,48615.msg274021.html#msg274021 Mod: topics merged, new link here: http://www.glassmessages.com/index.php/topic,40764.msg274021.html#msg274021and [my]
post #3 on that thread also has a photo showing, surprise!, the loop-handled candleholders with the GTS Mystery set 27 tray and lidded pots just as in Anne E.B.’s initial post in this topic.
Actually, I've only just noticed that the conventional 'stick' candleholders in these blue and pink sets are different - the bases differ in shape, and the pink set candleholders have a wax catcher plate below the cup on the sconce that is absent in candleholders in the blue set
At least we now know that the GTS Mystery 27 sets come in amber, uranium green, and two shades of pink, and that they can occur with either conventional stick candleholders [perhaps in a variety of different shapes] or loop-handle candleholders, but I don’t think that we are any further on with an attribution whatever the shape of the candleholders.
(Permission for re-use of the images of the blue set on GMB by fishdam09, and of the dusky pink set by bazza131313).