Joker run marbles can be had at most shows for $2-3 each if you buy several. They were made in very large quantities and judging from what I have seen - there are people with many, many thousands put away.
Are you using a web host for your photo - such as Photobucket? If not - sign up for a Photobucket.com account. Then upload the photos from our pc to Photobucket (the user interface is easy and self-explanatory. Then copy and paste the resulting <img> code you'll see on the 3rd link line into your post here. The photo will appear in your post.
Give that a shot and post again if you have difficulty.
The only thing I have close to it (the lavender and goldstone on a transparent base) is an unsigned torch piece that I believe to be (but cannot confirm) a John Hamon Miller. The use of lavender/goldstone is not a common combination among artists.
Ann: I use a Canon G5 for most of my marble photos - and a DSLR for special photos. The key in camera selection for marble photos is the minimum focal length (its in the specifications) in the macro mode - and how well the macro mode works. Take a marble to the store when shopping for cameras - use the macro mode and see how well the camera focuses without too much fuss. You can also use close-up filters (I use Hoya) - but they are more fussy and not needed in most photos. An expensive camera is not necessary. Quality optics and lighting are FAR more important than resolution.
I have an idea to loosen things up and "get back to marbles".
Proposal: This is a progressive marble photo thread - sort of a play on the "Color of the Month" threads.
Rules: I'll post a marble photo. The next poster chooses one color from the preceding post's photo and posts a marble photo that must have that chosen color present in it. The next person in line chooses any color in that preceding photo and posts their own photo with that color...etc etc. Single marble photos only (unless they are the same colors) - vintage or contemp. Have fun!