Wow! Thanks everyone! They're 27inchers. The lack of stamping on the seat stays and chromed chainstays is what's confusing me, as every example I've come across that could be a match include those features. I thought I remember finding a PDF online of a Lotus catalogue but I'm having trouble digging it back up.
She's going to be donating the Super Maxys to a Univega frame I'm converting. Anyone trying to get rid of a period correct crankset? I'd hate to not be able to ride her when I want to.