These can be confusing.
The basic design was used by Paul Ysart during his 1970s "Harland" period, and appeared in a 1975 brochure with the design name "Mili Fiori".
Willie Manson introduced the design, called "Latticino", to Caithness Glass in 1976 and, as Derek has said, he later used it within his 1980/1 "Scotia" range, under the design name, "Satin Chain".
I was told by Peter Holmes that at Caithness Glass, some of the "Latticno" design were made at Perth and some at Oban. This may be the reason why some have a CG cane and others do not.
My understanding is that outer canes in the CG "Latticino" versions are Paul Ysart canes and the inner circle are made with Caithness Glass canes. Some sources suggest that the inner circle had a fixed number of canes but I have seen examples with various numbers of circle canes.