On eBay, there is a 1979 Royal 608 Heavy Duty Commercial upright that has been rebuilt extensively by Stark's Vacuum Cleaners in Portland, OR.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=271443827324&ssPageName=ADME:X:RTQ:US:1123
Studying the pictures in the auction, you can see why this has been rebuilt: the fan case is from at least mid-1985, and the Adjust-O-Rite plate is black (it was originally red). The bag assembly is gray (it was originally dark blue).
The motor size for a 608 made in 1979 was 3 amps; by the time the new design fan case was used, it was 4.5 amps, and then 5.4 amps.
~Ben
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=271443827324&ssPageName=ADME:X:RTQ:US:1123
Studying the pictures in the auction, you can see why this has been rebuilt: the fan case is from at least mid-1985, and the Adjust-O-Rite plate is black (it was originally red). The bag assembly is gray (it was originally dark blue).
The motor size for a 608 made in 1979 was 3 amps; by the time the new design fan case was used, it was 4.5 amps, and then 5.4 amps.
~Ben
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