There seems to have been two editions of this book published in the 1980's by Penguin/Puffin Books.

This edition seems to have been the more common

https://www.amazon.co.uk/d/Books/Tottie-Story-Dolls-House-Young-Puffin-Godden/0140316752

There was a slightly different edition (varying in cover design) which was published and can be seen this website.

Does anybody have a copy of this edition? I'm trying to find out the ISBN number so I can track a copy online.

http://www.thechestnut.com/pinny.htm