Caithness has used or is using several methods to "sign" their paperweights:
1. Signature canes - like CG or PH (Peter Holmes); also wm canes are in several weights designed by William Manson during his time at Caithness; and then there is the Whitefriars monk cane, of course. Only the monk cane seems to have been used recently.
2. Etched (or sandblasted?) signatures on the flat base - scroll down about half way on
http://www.glass.co.nz/Caithness.htm for a schematic drawing.
3. Scratched signatures were used a lot before the advent of the etched ones, and are still being used on non-standard shaped weights, where the base is not suitable for an etched signature - as on
Cornucopia.
4. Seconds have been marked "C II G" (either scratched or sandblasted) - but I remember Allan telling us in another thread that this has been abandoned, and seconds just don't get their base polished nowadays.
Under which circumstances could a paperweight have no identification mark at all? I have recently acquired a "Traditional Pool"

designed by Colin Terris in 1998 with an edition number of 350. With a limited edition I would expect a certificate and some sort of signature, including the serial number of the individual weight. No certificate was included - which is plausible after a weight may have changed hands several times. But no signature at all? ... Or is this weight not really a "Traditional Pool"?? In the Charlton catalogue this weight is listed as "spherical" - whilst mine is a disk

Does anyone own a "Traditional Pool" or has seen one directly and remembers the shape? The internal design looks correct - compare with the
catalogue, where it is listed as "low dome" - but unfortunately no dimensions given (mine is 120 mm dia and 39 mm high).