The part number on the sticker is a "Eureka Sanitaire SC-6600A Commercial Vacuum Cleaner" part number.
That is why ordering vac parts is crazy.
Sears Parts Direct shows the Electrolux plastic canister, and the Electrolux upright, diagrams and part numbers. Most everything says "No longer available", but if you dig, there are parts galore for them.
With Perfect cloning these now, there are even more parts out there.
I had a thread on this design, and how it is still being made (often under different brand names)
"Aerus/Electrolux discovery design keeps on going"