If this card is Mifare Classic, and you have supported reader which can run
nfc-tools and can run Mifare Classic Offline Cracker you can now find out!
+docs includes local copy of following documents:
+
+http://www.nxp.com/acrobat_download2/other/identification/M001053_MF1ICS50_rev5_3.pdf
+
+http://www.nxp.com/acrobat_download2/other/identification/MAD_overview.pdf
+
+http://www.nxp.com/documents/application_note/AN130411.pdf