Partscaster Frankenstrat 70s-80s Pearl Creme - See Description

Really unique one-off Strat style guitar. Guess of when created is 70s -80s. Great player. Have included a number of pictures. Never seen any body with the 3 rectangular routes. The body and neck are original to each other and you can see that they have been together for their entire life. Have had for a number of years, but never really used it and am moving it to someone who can put to to work. 

Not exactly sure the origin of this body and neck. Based on the quality know that they appear to be American made but just a guess.  Have never seen 3 square routs like this on any body. The body and neck were definitely born together. The imprint of the neck is perfectly inlaid into the neck cavity from being there all its life. The neck and the body both have the same date stamp. You can see the pearl finish has aged as seen in the pictures where the pickguard has been removed. The guitar is in very nice condition and it plays excellently. The neck as been sanded up to the headstock and is very smooth. You can tell it's a vintage model of some type as it has the truss rod adjustment at the heel. It appears the pickups are Fender. Everything works great. There are some dings and small chips on the body, but this thing is a real player. Neck plays outstanding with only minimal fret wear. You can see that there have been a number of different tuners on it by the number of filled holes. Currently has a nice set of Wilkenson tuners on it. A few spots of discoloration below the tremolo on the front that may be from an old stickers?
Check out the interesting date stamps inside the tremolo cavity. The same date stamp is on the neck. If you have any questions or can shed some light on this guitar, let me know.
There is an old crack on the back of the headstock...however, it doesn't go all the way to the front of the headstock. Added several pictures at the end to show clearly what's up.
Only goes to the 3rd tuner and only on the back side.
Thanks!