I did some checking and found that the Hoover Portable was introduced in 1962 or 1963 and discontinued circa 1981. The early Deluxe model sold for $64.99, and the early Standard model was priced at $44.99 (I don't know what the differences were).
Here's a list of models & their colors w/incomplete info.:
2100 "Deluxe" Mint (1962- ?)
2110 "Standard" Gold & Seal Greige
2120 "Standard" *Horizon & *Colonial Blue
2120-01
2200 "Deluxe" *Pearl White & *Canton Red; w/cord winder (1964-?)
2201 "Deluxe" Orange & Seal Greige; w/cord winder (1966-72)
2204 "Deluxe" Gold & Seal Greige w/line graphic; w/cord winder
2208
2210
2260 “Super” Light & Dark Seal Greige; w/cord winder, big wheels & dark tools (1969-?)
2266 “Super” Light & Dark Seal Greige; w/cord winder, big wheels, & light tools
S3013 “Deluxe” *Mint & *Holly Green; w/cord winder
S3013-001
S3013-035
S3015 “Super” *Goldtone Shades; w/cord winder & big wheels
S3015-01
*confirmed Hoover advertisement names
Specs:
►8 ¼" high
►takes up less than a foot of floor space when stored on end
►weight with tools 24.6 pounds
►motor - 840W (1⅛ horse power); 20,000 rpms
►3-stage fan system
►Tufflex hose double vinyl construction w/nylon mesh
►Attachments: rug & floor nozzle, soft dusting brush, general purpose upholstery nozzle, crevice tool, telescoping extension wand
►triple filter system (throw-away bag, special filter ahead of motor, filter behind the motor)
►one-year guarantee