'Details' you will not find there.
There are both Mark 5 and Mark V.
There are both Mark 7 and Mark VII.
The early Mark 5 is essentially the same as a Mark V 500.
The early Mark VII is NOT the same as a the current Mark 7.
The Mark 5 was changed to Mark V with the introduction of the '510'.
The Mark V became a 500, 505 or 510 and eventually the 520.
The differences between the 5xx are the tables and rip fence.
The Mark 7 is a modified design of the 520 that adds dual tilt and under table routing and the power pro headstock.
All the models are 'upgradable' from the earliest Mark 5 all the way up.
The early Mark 5 were two tone green(Greenies) or two tone copper/brown/gold(Goldies aka Brownies).
The Greenies came in two varieties(Sand cast "A" headstock and die cast "B" headstock).
All Greenies and early Goldies were Gilmer drive.
Later Goldies and later gray models were Poly-V drive.
The "C" headstock moved the power switch and mounted it into a square hole and included a locking switch.
Well some of this is 'there'.
There have been different corporate entities that produced this product.
Magna Engineering, Magna Power Tool Corp., Yuba Power Products, Inc., Magna American Corp., Shopsmith Inc., and currently RLFBRANDS LLC.(reorganized from Shopsmith Inc.).