Acoma Fine Line Pot with Pie Crust Edge

It is about 9 inches across the top and about 6 1/2 inches tall. The imprints in the pie crust edge seems unusual, haven't seen that anywhere. There seems to be a little writing in pencil on the bottom but it is unreadable, looks like something something 5. I found it at a sale. There is hairline crack on the inside bottom. I would love to hear any opinions on it. Thank you.