That looks like a groovy late-'60s model. Congrats on obtaining it!
I did some searching and found a 1966 brochure with what appears to be the model preceding yours going by the hood badge’s text & graphics and the tank’s decal. For fun I also attached a 1964 ad of a toy Regina vacuum.
Here's also a link to a current eBay listing for a users manual that looks like it is from the era of your model P1022P.
https://www.ebay.com/itm/2346104931...2uUFR1lHkg210enPbZqkbqQqs=|tkp:Bk9SR6jipIORYQ
I’m unaware of any big-time Regina collectors on Vacuumland, so you may want to consider becoming one by forming a collection and researching models and years of production using old VL threads, online auctions, and local repair shops that have service manuals.
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Regina Corporation History
From a column by Helaine Fendelman and Joe Rosson in the Tribune News Service Nov 10, 2015:
"The history of Regina began [at Leipzig, Germany] in 1889 when Gustav Brachausen, along with Paul Riessner, created the Polyphon Musikwerke . In 1892 they decided to branch out to the United States and established the Regina Music Box Company in Jersey City, New Jersey. Initially, they imported the boxes from Germany, but in about a year, they found they were so successful that they leased a building in Rahway, New Jersey, and within a few years they were manufacturing their Regina music boxes entirely in the U.S.
"Regina thrived in the music box business until the phonograph put them out of business (sort of) in 1922. In 1902 the company dropped the words “music box” from their name and began to diversify. They began to make … two-person pumpers … but they sold poorly.
"When the music boxes were no longer in demand, the vacuums continued to be made, but not in large numbers. In the 1930s, Regina introduced a canister vacuum, ... [beginning in 1952] they made [Electrik-Broom] stick models . In the 1980s, employees bought the company, but it was later acquired by [Electrolux Corporation in 1989, then] Philips Electronics in 1995, Oreck in 1997 and the Royal Corporation in 2000. Royal produced vacuums under the Home Depot label."
From Wikipedia:
In the '90s the Peanuts character Pig- Pen appeared in Regina commercials.
In 2020 Regina Vacuum LLC relaunched the Regina brand. (Its website unfortunately has no mention of the RC history or vintage products.)
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A partial list I composed from online searches today (years are from ads or decals):
Regina Floor Conditioners – 400W/115V
-Model S – block badge lettering with wavy “Polisher and Scrubber" text; burgundy rounded rectangular hood; black handle grip; white bumper
-Model TS – script badge lettering – white rounded rectangular hood, bumper, handle grip; pink handle grip; c. 1955
-Style 200 – script badge lettering – green rounded rectangular hood & handle; gray bumper & handle grip
-Style 500 Custom – block badge lettering w/crown logo – white rounded rectangular hood, bumper, handle grip; pink handle; c.1956
-Style 510 – script badge lettering w/fancy ‘R’ & crown logo – slate blue rectangular hood & handle; white bumper & handle grip; c.1957
-Model ? – “Heavy Duty – Dual Torque” – 2-speed; narrow block badge lettering w/simplified crown logo sea blue rectangular hood, handle & tank decal; white handle grip
-Model P707B “Heavy Duty” – oyster rectangular hood w/narrow block badge lettering & simplified crown logo
-Model ? – green squared oval hood & handle; white bumper & handle grip; narrow block badge lettering w/simplified crown logo
-Model P781A – “Heavy Duty” – 2-speed; narrow block badge lettering w/simplified crown logo oyster rectangular hood, handle; white handle grip & tank decal
-Model P1042A “Heavy Duty Dual Torque 2-speed” – sky blue rectangular hood & handle; white bumper; sans handle grip
-Model ? “Heavy Duty – Dual Torque” – 3-speed; narrow block badge lettering w/simplified crown logo sky blue rectangular hood, handle; black & white tank decal; white handle grip
-Model ? “Heavy Duty – Dual Torque” – 3-speed; narrow block badge lettering w/simplified crown logo oyster rectangular hood, handle; black & white tank decal; white handle grip
-Model ? “Heavy Duty” 3-speed” – salmon rectangular hood & handle; white bumper & handle grip; white narrow block stamped lettering w/simplified crown logo
-Model ? “Heavy Duty 2-speed” – yellow rectangular hood & handle grip; white handle & bumper; white tank decal; white narrow block stamped lettering w/simplified crown logo
-Model ? “Shampooer/Polisher”– 5-in-1” (shampooer-polisher-scrubber-waxer-buffer); red rectangular hood & bumper; ivory handle, handle grip; white narrow block stamped lettering w/simplified crown logo
-Model P1052 “Heavy Duty Semi-Commercial – 5-in-1” decal (shampooer-polisher-scrubber-waxer-buffer); early-‘80s
