I am listing a group of my larger pieces and making them first available to ICON before I am "forced" to put them on the E place. I am out of room and must let some of these really nice ones go............This one is a CD 288 marked PAT'D By R.D. MERSHON with the single ridge. Interms of faults, there really are none save several open bubbles-one on the base and one on the inner rim...both small and relatively invisable. There is a small uneven white surface mark over one of the ridges which looks like a minor lightening strike, but I am just guessing and it's of little impact on the overall appearance. The guide says $75-100. I think $70 is a very fair price for this one. Shipping will be actual...this one is heavy weighing 3#s unpacked.