These unique sterling silver earrings  on the front state: BRONCOS & above that TICKET. On the back it states: 9.25 TM@1999 NFL BY FELLEY INC. Beneath that 505 872  371 .(I'm not sure about the last 3 numbers). On the left side: 90 22 & on the right side: 91322. It's difficult to read, but I suspect that the numbers indicate the section of the stadium & the seat.