I've narrowed it down to a 1835c and 1845 (no letter)
I'll say it will be used for fun and randomly around house. No commercial use. The 1845 does have a quick release. The 45 is a little cheaper. Not much.
1835Cs were notorious for engine trouble. They were the only Case skid steers that used the Continental/Teledyne TM20 (gas) TMD20 (diesel) and they didn't hold up.
The 1845 will have the venerable old Case engines.
