My parents industrial Vitamix 3600 received as a wedding gift in the mid 70's, still making smoothies and grinding wheat into flour without complaint : r/BuyItForLife
Vitamix 3600 Plus Blender Stainless Steel 900W VM0137 | eBay
Vitamix 3600 Plus Blender Stainless Steel Motor / Base Only - TESTED WORKING | eBay
Vintage Vitamix 3600 Stainless Heavy Duty Blender -food Processor - Juicer USA for sale online | eBay
FITS VITAMIX MODERN SS CONTAINER TO CONVERT TO 4000 3600 PLUS 4-PC KIT+ Side han | eBay