Vintage Wooden "Hidden Box" Rotary Phone

Description

Vintage Wooden "Hidden Box" Rotary Phone
Obviously not a cell phone but an interesting phone nevertheless.
Found this in a box from my grandparents.
A very cool desk accessory.
In good condition but could use a good cleaning and polishing.  Box is finished in dark brown.  Inside the top is felt.  The dial rotates as intended and all the wiring and cords are in very good condition and secure as far as I can tell.  It has a 4 prong connection.  I think this is probably from the 60's but not sure.
I have no way to test this phone but I believe you can buy an adapter maybe from amazon that would work with this.
I looked it over and cannot find any mfg. information or model #.  I expect that info is inside the box but I am not going to dismantle the phone.
Please see the pictures.
Thank you and please see our other items.
Please note with the weight of this at 7+ lbs and that it won't fit into a flat rate box, the mailing might be more than noted in the listing so please be sure to check with postage to your location before placing a bid.
Thank You.