A very kind eBayer wrote to tell us. Your excellent RPPC depicts an early International Harvester tractor driving a stationary hay baler. Stationary meaning you bring the cut hay to the parked baler rather than towing the baler around in the hay field. You can see the square bales being formed inside the baler. If I had to guess, I say that a farm machinery dealer commissioned this RPPC as an advertisement to send to a few potential customers. So apparently nothing to do with rock crushing though someone wrote that on the back. Please examine the images carefully as the photos are our best description. We’re always happy to try to answer questions about condition. NOTE: We sometimes heavily watermark to protect our photos and the card images for the benefit of our customers.