Hello,
I'd agree wholeheartedly with Sue on this one and say notCaithness.
The only similarity is the shape of the undercurve coming from the base and meeting rest of the body.
Otherwise the colour is wrong; the top 'half' of the shape clumpy and not graceful as with the O'Broin designs that are being alluded to; and the pontil and base are not familiar to Caithness.
Cheers, Nigel