Letter and number code, on both crank cases, letters on top, numbers on bottom.
VM / 212 1956 Pace (orange engine cowl)
VM / 340 Green Rover (early 60s base, orange engine cowl, possibly wrong engine)
VM / 668 Buz-a-cut (Entire engine is blue)
VB / 1441 Rover Major (orange engine cowl)
VB / 1501 Rover 18 (orange engine cowl)
VB / 1684 Engine with Rover style holes in cowl, base is missing (red cowl)
VB / 2121 Rover 18 with "powered by Simplex" cast into base. (orange engine cowl)
VB /2141 Engine with Rover style tank (Base is missing) (orange engine cowl)
VB / 2318 1957 Rover Major (orange engine cowl)
VC / 2426 Malvern 18" (later cowl with fuel tank inside)
Letter number code, with letters and numbers on top, and just numbers on bottom.
R6 / 698 Stationary engine (no engine cowl)
V-code - only on lower crank case
V8584 Minter (yellow engine cowl)
V3922 Buzacott stationary (entire engine is blue, licence built by Buzacott)
V3963 Buzacott stationary (entire engine is blue, licence built by Buzacott)
V8312 1956-57 Pace (orange engine cowl)
V8584 Minter (yellow engine cowl)
V9306 Minter (yellow engine cowl)
V9640 Rover Cadet
