Vtg Rusty Metal Farm Gear Wheel/sprocket 12”

eBay - toynut3809

Overall circular form factor and dimensions are consistent, Outer sprocket teeth design and spacing match closely, Solid central plate design is consistent, Central circular hole is present, Distinct inner ring with teeth/texture matches the source frame's detail, Heavy, encrusted rust texture and color are highly similar, Material (metal) and condition (heavily rusted) align

Vintage Industrial Machine Gear Chain Sprocket 12.5" Diameter 11.5 Lb

eBay

Exact match for overall flat, circular sprocket form factor, Presence of both outer and inner rings of teeth, Matching central bore design, Highly consistent heavy rust and corrosion pattern, Metal material matches, Industrial category aligns, Unbranded nature matches source

Large Heavy Metal Gear, Cog or Sprocket, Double Gear, Rusty Industrial Salvage

Etsy - PatinaRustandBling

Overall circular form factor and dimensions are consistent, Outer sprocket teeth design and spacing match closely, Solid central plate design is consistent, Central circular hole is present, Heavy, encrusted rust texture and color are highly similar, Material (metal) and condition (heavily rusted) align