Case 880c serial number 6205343 Case 1150B serial number location

I just purchased an 880C Case excavator with SN 6205343. Can anyone tell me the year of manufacture so I can find the proper parts manual w/o having to buy a serial number manual? Also I purchased an 1150B case track dozer and the auction house that sold it cannot locate the serial number on the machine (interesting eh!). Can anyone tell me where to find that number so I can get manuals for it as well. Regards, Wanna Digmore