There were some cars built by Angliss in the 1992 and 1996 period that used the numbers COB4000, COB4001, COB4004. After AC Cars was purchased from receivership in 1996, management built some cars called "427 MKIII's" COB5001, COB5002, COB5003, COB5004, COB5005, COB506, COB5007, COB5008, COB5009, COB5010, COB5011, COB5012
These are not Cobras but no doubt they will cause confusion in the future.