This weight has been on offer on ebay for some time. As it doesn't show up in any regular Caithness catalogue, I had contacted the seller, and got the following info:"I have the original box for the weight, .... label with a barcode and the legend "Caithness Paperweight Caledonia Blue 5912794 Edition Size Unlimited"."
Now - the C in "C15733" indicates the weight was made either in 1985 or 2005. The "5912794" fits the numbering scheme used in 2005 (completely different from 1985) - so we can be sure the weight was made in 2005.
I don't have any info on the designer, nor for which purpose it was made, i.e. why it doesn't show up in the regular catalogues.
We have the seller's permission to use the image on
Scotlandsglass, and it will show up there in due course. Therefore any additional information would be appreciated.