Gas Mask and Jumpsuit skins

How do I get the Skin ID of the Gas Mask and Jumpsuit that the tunnel dwellers wear?

These items appear to be actually a Bucket Helmet and Bone Armor with custom skins.
But when I do `item.skin` on the items it shows as Skin ID 0 (default skin)...And i can't seem to find them in the steam workshop.

After messing around with this for awhile i realize that these items are actually unique items, but just use the Bucket Helmet and Bone Armor thumbnail icons when view inventory.

Is there anyway to get the correct thumbnail icons?