Check the listing for details. Subscribe to Workers World WWP & Help Build One Marxist Cause Pinback Button. Condition: Used, Made in United States. Listed at 5.50 USD. This listing is for Subscribe to Workers World & Help Build One Marxist-Leninist Communist Party cause pinback button. Approximately 2 1/4" diameter pinback button. WWP- The Workers World Party is a Marxist-Leninist Communist Party and was founded in 1958. Condition: Good used condition with spotting on front & rust on back. See actual photos. We do combine shipping. Check my listings for more Anti-Vietnam War buttons, magazines & other unusual items! We pack defensively. Buyer to pay USPS Shipping. Buy now before shipping rates increase. Starting April 26, 2026 through January 17, 2027, the United States Postal Service (USPS) will implement a 8% fuel surcharge on select shipping services due to rising transportation and fuel costs.