Wow, Keith ... awesome Model 1453! And, I'm impressed that you have most of the Electrolux bronze series from 1979 to 1982! The only one you're missing (I think) is the Model CB and the PN-4A (short motor housing) and PN-4C (3-wire) power nozzles. The uprights of the era, models 1451 & 1451E were tan.
Also, in case you didn't know, the Olympia One had three different models: 1401 (Spring-Autumn 1979), 1401-B with wider wheels, bumper fins, & 2 handles (Autumn 1979-Winter 1982); and 1505 with PN-4A (Winter-Spring 1982). The B-8 even had two slightly different versions: an earlier one with the detachable power cord and classic shampoo tank label and the more popular one with the hard-wired cord and label with block "Carpet Beautifier" text instead of cursive.
Btw, the 1453 Deluxe Special was made from 1979 to 1987 in four color patterns that matched the standard cleaners: bronze & ivory; metallic gray & gray; sand & jade; and sand & taupe (only made for a short time in 1987).
Trivia: The bronze 1453 was the only one that had two versions--the "Deluxe Special Model", with the power nozzle and the "Special Model" without the pn (dubbed "Olympia II" in Canada); "Olympia Special Model" is a nickname used by some. The straight suction option was only available for a short time before being discontinued. In addition, with the bronze 1453, a customer had the option of not having either a cord winder or a cord wrap (like the 1950s Model S, the cord was just hand-coiled and stored in the handle).
Nice collection!