Bet you never saw a 410!: http://www.ritchieequipment.com/Misc-Equipment/MICHIGAN_410-IV_SCRAPER_422A-101.htm
Clark didn't build a lot of 410's but did build a lot of smaller scrapers at the old Hancock plant in Lubbock Texas, they also built a lot of Terex scrapers under contract.
Yep, absolutely. When I was a kid I saw some 110s and 210s around. I saw an old 110 still running a few years ago. But I think they only made something like 20 of the 410s. Looks about the same size as a 651.