This listing is for the Roman Pantheon watercolor set, which includes the following 6 watercolors, a storage tin, and a themed sticker (or two!)
 
Fortuna (this color also has holographic flakes)
Vulcan
Tellus
Minerva
Cybele 
Pomona
 
Unsure about sizing? The Half Pan set is pictured in a small tin.  There's a complete sizing guide included in the product photos and the following is a list of volumes:
Sizing information per pan:
Quarter Pan: 1mL (Small Tin)
Half Pan: 2mL (Small Tin)
Round Pan: 2.5mL (Medium Tin)
Full Pan: 4mL (Medium Tin)
 
See photo for a visual and measurements. 
PREORDER INFORMATION (if applicable): Preorders are open for 1 week and material sourcing/paint production doesn't begin until the preorder closes. Keep in mind that since these are made to order, the processing time is upwards of 1 month.