Ancient Throwing Stone or Tool? greyhound plate The paper size is just

The paper size is just shy of that

These will be packed SUPER carefully for safe travel

The front and back cover have both come loose from the hand-stitched spine

75" long x 1 3/8" wide x  1

with calendar pages torn off and some scattered smudges and small stains

Ancient Throwing Stone or Tool? greyhound plate The paper size is justI purchased this from a wonderful dealer in New Hampshire whose cabinet of curiosities includes objects decommissioned from museums and science departments as well as gathered from estate collections all over. She didn't know the origins of this stone and neither do I, but it sure looks like a throwing stone to me! If not certainly used as a tool of some sort, with a couple of divets on the bottom one just the right shape for a thumb gripping it.