Hi
Yea - go to this picture.....
ImageShack - Hosting :: eclipse2be6.jpg
Then click on the picture and it goes bigger.
Then at the top of the picture where the tuning slide has been pulled out you will see some letters. There are only so many letters which could be here as they correspond to the bell type.
From what I can see there is certainly an R and what i believe to be an M
This makes MR, which if you look at the eclipse website corresponds to Medium Red.
My medium solar has MS stamped there.
Matt