I can't get a legible photo of the impression mark, but I'm guessing anyone who knows Kerry paperweights will be familiar with it, it reminds me of a serpent turning back onto itself, an opened oval circle.
I'm just curious, does anyone know what it's meant to signify? For some odd reason, it's driving me crazy not knowing.
Hmmm, as I write this, itjust popped into my head, maybe a fancy "C" for Celtic?