Exiftool info from canon.pm file indicates that the tag could differ?
# NOTE: some pre-production models may have a model name of
# "Canon EOS Kxxx", where "xxx" is the last 3 digits of the model ID below.
# This has been observed for the 1DSmkIII/K215 and 400D/K236.
0x80000001 => 'EOS-1D',
0x80000167 => 'EOS-1DS',
0x80000168 => 'EOS 10D',
0x80000169 => 'EOS-1D Mark III',
0x80000170 => 'EOS Digital Rebel / 300D / Kiss Digital',
0x80000174 => 'EOS-1D Mark II',
0x80000175 => 'EOS 20D',
0x80000176 => 'EOS Digital Rebel XSi / 450D / Kiss X2',
0x80000188 => 'EOS-1Ds Mark II',
0x80000189 => 'EOS Digital Rebel XT / 350D / Kiss Digital N',
0x80000190 => 'EOS 40D',
0x80000213 => 'EOS 5D',
0x80000215 => 'EOS-1Ds Mark III',
0x80000218 => 'EOS 5D Mark II',
0x80000219 => 'WFT-E1',
0x80000232 => 'EOS-1D Mark II N',
0x80000234 => 'EOS 30D',
0x80000236 => 'EOS Digital Rebel XTi / 400D / Kiss Digital X',
0x80000241 => 'WFT-E2',
0x80000246 => 'WFT-E3',
0x80000250 => 'EOS 7D',
0x80000252 => 'EOS Rebel T1i / 500D / Kiss X3',
0x80000254 => 'EOS Rebel XS / 1000D / Kiss F',
0x80000261 => 'EOS 50D',
0x80000269 => 'EOS-1D X',
0x80000270 => 'EOS Rebel T2i / 550D / Kiss X4',
0x80000271 => 'WFT-E4',
0x80000273 => 'WFT-E5',
0x80000281 => 'EOS-1D Mark IV',
0x80000285 => 'EOS 5D Mark III',
0x80000286 => 'EOS Rebel T3i / 600D / Kiss X5',
0x80000287 => 'EOS 60D',
0x80000288 => 'EOS Rebel T3 / 1100D / Kiss X50',
0x80000289 => 'EOS 7D Mark II', #52
0x80000297 => 'WFT-E2 II',
0x80000298 => 'WFT-E4 II',
0x80000301 => 'EOS Rebel T4i / 650D / Kiss X6i',
0x80000302 => 'EOS 6D', #25
0x80000324 => 'EOS-1D C', # (NC)
0x80000325 => 'EOS 70D',
0x80000326 => 'EOS Rebel T5i / 700D / Kiss X7i',
0x80000327 => 'EOS Rebel T5 / 1200D / Kiss X70',
0x80000331 => 'EOS M',
0x80000355 => 'EOS M2',
0x80000346 => 'EOS Rebel SL1 / 100D / Kiss X7',
0x80000347 => 'EOS Rebel T6s / 760D / 8000D',
0x80000382 => 'EOS 5DS',
0x80000393 => 'EOS Rebel T6i / 750D / Kiss X8i',
0x80000401 => 'EOS 5DS R',
);