"show diag" should give you this:
sv3-6#sho diag
3660 Chassis type: ENTERPRISE
3660 Backplane EEPROM:
Hardware Revision : 1.0
Top Assy. Part Number : 800-04740-02
Board Revision : C0
Deviation Number : 0-0
Fab Version : 02
PCB Serial Number : HAD044713YD
......
......
AIM slot 0: AIM-VPN/HPII VPN Hardware Module
Hardware Revision : 1.0
Top Assy. Part Number : 800-18028-01
Board Revision : A0
Deviation Number : 0-0
Fab Version : 03
PCB Serial Number : JAD07020627
RMA Test History : 00
RMA Number : 0-0-0-0
RMA History : 00
Calibration Data : Minimum: -1 dBmV, Maximum: -1 dBmV
Calibration values : 0xFFFF 0xFFFF 0xFFFF 0xFFFF 0xFFFF 0xFFFF
0xFFFF 0xFFFF
....
