Vintage Sinko Steering Wheel Spinner Knob, Marbled Butterscotch Plastic, Ribbed Die Cast Clamp, Circa 1930s to 1940s

This is a Sinko steering wheel spinner knob, circa 1930s to 1940s, with a glossy marbled butterscotch plastic dome and a ribbed die cast clamp stamped SINKO CHIGO. U.S.A.

One mounting screw is missing, so a buyer would need to supply one. No cracks are visible in the knob in the photos. The dark blue gray paint on the base has wear on the edges, the underside shows surface grime and light scratches, and the star shaped retaining washer at the center post shows rust. Light scratches and scuffs are also visible on the knob.

A steering wheel spinner knob, also called a brodie knob, necker knob, or suicide knob, clamps to the rim of a steering wheel so the wheel can be turned with one hand. This one is stamped SINKO CHIGO. U.S.A. on the clamp strap.

Details

• Item: One Sinko steering wheel spinner knob
• Item Type: Steering wheel spinner knob
• Era: Circa 1930s to 1940s
• Materials: Marbled plastic knob on a die cast metal clamp
• Color: Translucent amber butterscotch with swirled marbling. The base is painted dark blue gray
• Maker and Mark: Sinko. The clamp strap is stamped SINKO CHIGO. U.S.A. The underside of the base has cast numbers 950-1 and 1, and a small oval stamp. The word CHICAGO is readable on the oval stamp; the rest of that stamp is not clear enough in the photos to transcribe fully
• Pattern or Model: Cast number 950-1 is visible on the underside
• Style: 1930s to 1940s automotive accessory
• Dimensions: The round knob is 2 in. Where it attaches is 2.5 in by 2 in
• Special Features: Glossy domed knob with swirled marbling. Ribbed die cast saddle base. Curved metal clamp strap with an eye hole. One slotted mounting screw is present

Condition Grade: Good 

Positives

• Graded Good: No cracks are visible in the knob in the photos. The SINKO CHIGO. U.S.A. stamp on the clamp strap is clear, and the swirled butterscotch marbling is clearly defined.
• One slotted mounting screw is present on the clamp strap.
• Cast numbers 950-1 and 1 are visible on the underside in the photos.

Issues / Wear

• One mounting screw is missing, so a buyer would need to supply one. This is how the knob was found.
• The dark blue gray paint on the ribbed base has wear on the edges, visible in the photos.
• Light scratches and scuffs are visible on the knob in the photos.
• The underside shows surface grime and light scratches. The star shaped retaining washer at the center post shows rust.

Find more like this in our Vintage Automotive and Car Culture collection.

If you collect vintage auto accessories or steering wheel spinner knobs, this Sinko marbled butterscotch example, stamped SINKO CHIGO. U.S.A., would fit a 1930s to 1940s garage shelf. If it's the one you've been looking for, it's ready to come home.