I need information on the columbia bikes from the early 1900's. Their condition and value. I currently have one or at least i think it is an old columbia bike. It is chainless, has no seat. It is still in good condition, you can still ride it. Appears to be made of cast iron(or i think so anyway.) It has a couple numbers on it one is 1740 and the other is 5740-what do these mean? Spokes are straight in the wheel, don't know if it had grips on the handle bars or not? Everything appears to be in the original order of manufacturing. This bike has been taken care of for sure. Please email me back with any info on this. kegil_424@yahoo.com. Thank you and have a blessed day.