
When I bought mine it was in the very early days of ebay, and it was listed as being 12 inches in diameter.
Although it is a really big weight, I was very miffed as I was expecting something the size of a rugby ball.
I'm going to split the tale in two. So I can illustrate.
These big weights in this decor are early pieces. When things were not all standardised and it was an "all hands on deck" sort of set-up, just trying to get the business going and established.
At some point, it was decided to put "signatures" on some of the larger or better pieces, to see if that helped sales. These marks were made mostly by Marie, who worked in the office, or by Eric Dobson, the manager. They do not actually "read" anything in particular.
Here are images of first Marie's mark and second Dobson's mark