While looking for comb imagery I came across this grave stele from Museo Maffeiano, Verona:
It made me look again at this Papius symbol which I had thought looked disturbingly like shackles. Seems to me the other side is a double sided comb. I find this a delightfully pleasant resolution.
Liv Mariah Yarrow 
[…] like mirrors esp. hinged mirror boxes because of how the image of them were misidentified as shackles on the Papius control marks and I (still) find that deeply […]