Make: Winchester (Manufactured in Germany, likely by Diana)

Model: 432

Markings: The left side of the breech block is marked “CAL. 4.5/.177” with a German “F in pentagon” pressure proof. The left side of the compression tube is marked “MADE IN GERMANY 02/73.” The top rear of the tube is marked “WINCHESTER MOD. 432.”

Serial Number: None

Year of Manufacture: February 1973 (Based on date code)

Caliber: .177 Caliber (4.5mm) Pellet

Action Type: Break Barrel, Spring-Piston, Single Shot Air Rifle

Barrel Length: 14 1/4"

Sights / Optics: The front sight is a blade dovetailed directly to the barrel. The rear sight is a fixed-notch leaf with elevation adjustment.

Stock Configuration & Condition: The stock is a one-piece hardwood with a straight grip and smooth, uncheckered finish. There are a few shallow compressions and scattered handling marks, mostly on the butt and forend. There are no chips or cracks. The wood has a warm tone and presents well. Overall, the stock rates in Fine condition.

Type of Finish: Blued

Finish Originality: Original

Bore Condition: The bore is bright and clean with sharp rifling. There is no visible erosion. In this writer’s opinion, the bore rates 10/10.

Overall Condition: This rifle retains about 97% of its original metal finish. The bluing is rich with minor thinning near the breech block and pivot area, and a few faint marks from handling. The markings are crisp and legible. Overall, this air rifle rates in Fine to Excellent condition.

Mechanics: The action functions properly. The barrel locks up solidly, the spring compresses smoothly, and the automatic safety engages as designed. As with all used firearms, a thorough cleaning may be necessary to meet your maintenance requirements.

Box, Paperwork & Accessories: Includes two tins of .177 caliber pellets.

Our Assessment: The Winchester Model 432 is one of the most obscure and desirable air rifles ever sold under the Winchester name. Made in West Germany—likely by Diana—and dated 02/73, it was imported during a short and little-documented period when Winchester partnered with European manufacturers to produce high-quality spring-piston rifles for the American market. While other models like the 422 and 427 are seen from time to time, the 432 is almost never encountered.

This example stands out with its excellent original finish (97%+), clean hardwood stock, crisp markings, and fully functional mechanics. The dovetailed front sight and German pressure proof markings reinforce its European pedigree, while the absence of a serial number adds a layer of mystique. It’s possible this rifle was part of a very limited production run or was intended for export markets only.

For serious Winchester collectors, this is a unicorn—the kind of gun that fills a nearly invisible gap in a collection. And for airgun enthusiasts, it's a chance to own a rare piece of Cold War-era craftsmanship that’s still a joy to shoot. With its excellent condition, dated markings, and rarity, the Model 432 is a sleeper gem. Good luck finding another.