Gwendy's Button Box

From Author Wars - https://authorwars.com/publications/gwendys-button-box-610253.html

Overview:

Title: Gwendy's Button Box
Author: Stephen King, Richard Chizmar
Year: 2017
ISBN-10: 9781587676109
Publisher: PS Publishing & Cemetery Dance Publications
Price: £45.00
Pages: 175
Binding: Hardcover
Type: Chapter Book
Title Reference: Gwendy's Button Box
Notes: Data from publisher's website. Sewn hardcover, acid-free paper; signed only by Richard Chizmar, and slipcased.
There is no evidence that this was a co-publication by PS Publishing, but just a slipcasing of the Cemetery Dance edition, signed by Chizmar, and sold through the PS Publishing website. There was also a Chizmar-signed edition without a slipcase sold for £22.00