Picked up 3 mowers yesterday, been sitting under a chaps house for many a year, 2 Victa's and a Sunbeam 2. Found Jacks brilliant information on the Sunbeams and it appears that this may be a first of the model series. Has the KAV74 2 stroke. spec number 6613 ( specification ? ) serial 8705. Can a manufacture date be determined from these numbers ? Although she's pretty rough it does look to be fairly complete, motor has compression and won't be surprised at all if it starts, wound the impulse starter which seems to be fine but made and unpleasant sound when released, sounded like the flywheel teeth are in a bad way. They are a big, heavy mower and the base is really thick so I was surprised that there was a hole on the upper side of the base. Catcher has a few cracks and feels a bit brittle but I thought it was a bonus it was there.