I can stamp "Trojans", a year, or a name in small uppercase letters underneath USC. Just make a note of it at checkout.
As this necklace is made to order, my turnaround time is listed in my shop announcement.
This design is also available with an initial monogram charm. See this USC listing. (I can put the proper color crystals with it, of course.) -- http://www.etsy.com/listing/77502642/university-of-south-carolina-charm