Get your hands on this vintage 1924 Massey-Harris 30 TRACTOR DISC HARROW Price List of Repair Parts. With a brand name that speaks for itself, this Harrow is compatible with Massey Harris and is sure to meet your needs. The model year of this Harrow is 1924, and it comes with a wide array of compatible equipment makes. The title of the Harrow says it all, and the aspects tell you what you need to know about the make and model. This Harrow is a great addition to any business or industrial setting, and is perfect for heavy equipment, parts, and attachments. Don’t miss out on this great opportunity to own a piece of history.