I got these recently and was looking for some info...Rollfast, Strato Flite
I was doing some electrical work on an old house that was being renovated and these bikes plus 2 others were in the basement. When I asked the owners of the house about them they said that everything in the basement was being thrown away. After I listened to a few quick stories about them riding them as kids they let me have them for free. One is a red boys Rollfast with 20 inch wheels and the other is a purple ladies Strato Flite with 26 inch wheels. The other 2 bikes were a girls blue sears spyder and another blue ladies sears bike.
The serial number for the Rollfast is on the rear drop out and say SE with a circle around it then D351088
The Strato Flite sn is also on the rear left drop out and it reads M06 then has a 1.5" inch space then reads ....65 but the 4 dots are centered on the 6.
I attached pictures and would really appreciate any info. Thanks.