Sellam Ismail wrote:
 A //c+ is an improved version of the //c.  For starters, it had a 3.5"
 drive instead of a 5.25".  It ran at a clock speed of about 3.3Mhz 
I gather then that the most obvious way of checking is to look at the disk
drive?  Were there any markings on the case (like a "+") to distinguish the
two?