Roman/Iron Age Skewers/Spits

[Mithras]

I'm cooking barbequed livers in a couple of days to a Roman recipe, and I have some iron to make skewers. I noticed that in Livy, one of the generals tells his soldiers to dump their gear and carry only a mess bucket and a skewer.

Before I make 'something up' (!!) does anyone have any photos or drawings of British iron-age or Roman skewers/spits??

I am going to post this on the Reconstruction Forum too...