I went to a yard sale one time back in the 70s. They had a corner of a bitters bottle, just the corner. Next to it was a sign that said "If this bottle were whole, it would be worth $300......................MAKE OFFER"
Great photos!! Side note - I remember going to a yard sale back in the 1970s where the seller had a corner fragment of an old amber bitters bottle displayed. A sign at base of the fragment read "If this bottle were whole, it would be worth $125 - Make Offer....."