I estimate around $120,000. Of which half would be the cost of the first coin, the Syracuse decadrachm.
I found it at my mother’s house while doing some cleanup in her garage. She had no idea where it came from. It was my childhood home and I had never seen it before either.
Wow! Does that estimate include the undescribed coin on the cover page? Do you know what that one is?
No I missed that. It's an early Roman silver coin called a quadrigatus, minted circa 200 BC if I recall correctly. Roughly the weight of a US quarter. For one in that condition, say, $5k or $6k.