Hi guys. Thanks for all the replies, I knew I was onto something special when I looked at these saws on the internet.
Picked them all up this morning, from what can only be described as a bit of a chainsaw enthusiast.
He was getting rid of some of the older models as he showed me his brand new STIHL MS880 which was rather nice!
He was also really concerned about selling these three to myself a newbie to chainsaws. Luckily his mind was put at rest when I told him I was soon to be on a course, and they wouldn't be used until I'd had time with a pro, and was happy to handle and run them. He started them all up for me, and showed me them in action, so all good and well.
I'm instantly taken to the 242, as most of the work it will do will be chopping a few trees down in the Mrs work's forest and turning them into firewood, so I have a feeling the two 056's will be wasted on me, so selling them to fund the course and maybe a newer saw in the years to come is the best plan, and good for keeping them in some loving hands.
The one 056 has a broken chain cover, but easily swapped with a new one from the States, he also thinks the bar it has with it isn't the right spec, I've not a clue regarding that.
The second 056 was his little pet, so is in pretty good nick for something he classed as needing a service, comes with a 20" oregon bar with oregon chain with 25 on it?!?
It also turned out both are the electronic quickstop version of the 056.