Okay, so I just heard back from MyT and was told that items from all 5 of the collections that make up that talisman I bought the chests in order to try and eventually make can be found when each chest is opened.
I see several items from the rest of the collections listed in my inventory. These are the CL's I received when I opened up 5 Chests of Antiquities:
1x Protective Mantle from the Protective Objects Collection
1x Display Key from the Lost Rarities Collection
3x Old Dolls from the Cursed Things Collection
Sorry, I didn't keep track of the fixers but there you have it. Out of 5 possible collectibles,3 of them were doubles. Those numbers are not going to get me to race to buy rubies so that I can dive in and try and again but at least I know I received the items that were advertised.