I have a Murray space flite, female with 26 inch tires. The stamp under the bottom bracket is "MOS 21 28653". What year is it? Here is where a full side view photo is. Click on the full image towards the bottom for a bigger image.
http://murrayvintagefemalecruiser.wordpress.com/full-right-side/
http://murrayvintagefemalecruiser.wordpress.com/full-right-side/