Hi Dan, I have the same problem discerning different manufacturers as most chips from Australia (my main area of collecting) are not made by Bud Jones but other manufacturers such as Dolphin, TCS John Huxley, Matsui & the like. I asked a similar question to yours recently but without much luck. It seems to me that all chips of a similar mold, regardless of manufacturer, get classed as BJ chips in the guides. If you do wish to asssign a manufacturer for your records it seems to get a little harder. You'll need to try hunting down different manufacturers sites & matching the molds, that's how I've started going about it.

The chips in your scan would seem to be made by TCSJH. These are 3 sample chips I have.

Hope this helped. Cheers, Tim.