This was another design from the Henry Dreyfuss design studio. It was released contemporary to the princess starting in the mid-60's. Your choice of 12 or 25 foot handset cord.
IF YOU HAVE DSL BE SURE YOU HAVE A FILTER IN LINE.
This phone mounts to a modular wall plate. As long as you have a wall plate, no adapter is necessary. It does not come with a line cord -- check that you have a standard RJ11 modular wall plate in your home before you order. If you don't have one your electrician can install one for you.
PLEASE SEE THIS LINK FOR INFORMATION ABOUT MOUNTING