>>3413254as Leica goes the IIIf is not overly valuable but it is still a pleasure to use. they are also quite easy to get repaired if something is not working, lots of people still work on them.
the vulcanite can not be repaired, it was actually baked onto the brass body, but you can get replacement leatherette. take your time and clean all the old vulcanite off and carefully apply the new stuff and it will look pretty good.
you can look up the SN to find the year of the camera, how many were made that year and weather it is just another IIIf or something more valuable
replacement leather here
http://www.cameraleather.com/ 