Gator Bob (Bob Israelite) posted this on the DC-Punk forum. There was also debate on whether it was legit. Bob confirms that it is and posted a pic of the entire Champion 36D lineup:
It started when Champion came up with a 'plan'.
All stock production Mabuchi motors received in cases from Japan were tested and sorted before leaving the Champion factory.
The program was called 1 in 10. Only the top 10% of the tested motors were 'bagged'.
Now... what to do with the other 90%. Many went in to RTR cars but the rest were torn down and rewound or sold as 'bagged replacement parts'.
Here we looking at Champion's first gen rewind called the 702. It's all OEM predecessor the 701 was a stock tested FT-36D offering.
IIRC all 702's were OEM Mabuchi parts except .. brushes, wire, paint, green sticker. .. bumped timing and a fresh zap.
Next up - 1966 was 'The 703'. There never was a 704 ... that I know of ... The 705 is 'The Ultimate' wound with 27 wire.