quiltlady1941

Hi I have been looking for a 15 91 singer machine and I seen some on ebay, Some have a belt and some a pot motor. but both say 15 91, do you think that the person with the belt driven machine has the wrong model number for that machine? or do some of the 15 91 singer have belts to run the machine and some a pot motor?

also could you tell me how larger the throat is on this machine, I have read that it is a good machine for FMQ..

Thanks