Hi again
How long is a piece of string !!! To a Caithness collector it would be of less interest as its not a production piece, to a collector of Alistair MacIntosh weights is would be of more interest as it is the only piece of this design. Alistair is one of few designers at Caithness who not only designed weights but also executed the design.
Many of his one off designs use Murano glassmaking techniques such as incarmo and reticello so to someone who's collection is based around the technical aspects of paperweight making it would be of interest. Many of Alistairs designs using these techniques were not suitable for mass production hence only one copy of each exists.
Derek