I think I have three stages of the same break on these quarters. The earlier stages also have doubling on the saddle horn area. But, not on the one with the chip. Am I correct?
sure looks like it at first glance! There quite a few DDs to look through. The pre die break and the clear doubling on the horn is a good sign I think.
To be absolutely sure that the three of them are different stages of the same break, you would need to find a marker (PUP) on the reverse, such as a die scratch, that is exactly the same on all three coins. Chris