First Impressions
The AMF Coca-Cola ball from the 1990s is less a technological breakthrough than a cultural icon of the bowling center. It belongs to the category of "Viz-A-Balls" (balls with pictorial motifs) or promotional balls. Visually it's unmistakable: usually done in the classic Coca-Cola red, with the white logo displayed large (often in the dynamic "Ribbon" design of the 90s) or an image of the classic contour bottle on the shell. Technically it is a pure polyester ball (plastic). Inside works a simple three-piece pancake weight block. The surface is extremely hard and polished to a high gloss at the factory. This serves to protect the artwork and to prevent any friction on the lane. It often wasn't a regular catalog item for pro shops, but rather a popular prize in bowling leagues or part of marketing promotions ("Bowl for Coke").
Comparison
Technically speaking, the AMF Coca-Cola ball is identical to the standard polyester balls of that era, such as the AMF Boogie or the Columbia 300 White Dot. The difference lies purely in the licensing and the aesthetics. Compared to a performance ball of the 90s, like the AMF Ninja or the Sumo, the Coca-Cola ball behaves completely passively. While the performance balls hook and send pins flying through the air, the Coca-Cola ball runs stubbornly straight ("dead straight"). It has no flare potential and no dynamic core to help at impact. It is the exact opposite of a modern reactive ball: where that one looks for traction, the Coca-Cola ball looks for skid.
On the Lanes
The AMF Coca-Cola ball has two primary uses today. For one, it is an excellent spare ball. Its hard polyester cover ignores oil and dry alike, which makes it perfect for picking off single pins precisely (especially the 10 for right-handers) without the ball turning over. For another, it is a sought-after collector's item. For Coca-Cola memorabilia collectors or retro bowling fans it carries high emotional value. For competitive use as a strike ball it is only suitable on extremely dry lanes or for complete beginners, since it lacks the hitting power (carry) needed for high scores.