Why do I feel like I'm just changing my feet in my mouth?
Oh, mine didn't fit. Hey, yours is a mixte with a single top tube!
I'm going to do some research. I've seen the single top tubes on ebay before and wondered if they were newer. Now I'm intrigued again, because it certainly IS a mixte. (3 rear stays remember). When you get it, see if you can find a serial number on it. Do a search on Lotus serial numbers and see if you can get a date on it. I didn't have any luck on my Bianchi, but I've had several bikes that I could even get the month they were manufactured and where!
Claudia
2009 Trek 7.6fx
2013 Jamis Satellite
2014 Terry Burlington