At some point in my young model rocket career, I owned an Estes Orbital Transport, but I am going to try to procure one through an eBay auction. Incredibly, these models are regularly going for more than $120. The one I won on eBay is pictured below.
To the right are pages 44 and 45 out of the 1971 edition of the 1971 Estes Model Rocketry Catalog that featured the Saturn V and Saturn 1B models.
Specifications:
Price: $3.75
Booster:
Length = 23" (58.4 cm)
Body Diameter = 0.976" (24.8 mm)
Wingspan = 7.9" (20 cm)
Weight = 2 oz. (57 grams)
Re-Entry Vehicle:
Length = 8.6" (21.8 cm)
Body Diameter = 0.736" (18.7 mm)
Wingspan = 5" (12.7 cm)
Weight = 0.5 oz. (14 grams)

Here is the Astron (Estes) Orbital Transport model rocket kit that I won on eBay. It is part of the collection I am attempting to assemble that represents Estes model rocket kits that I had as a kid back in Mayo, Maryland.