Below you can find logos, similar to the Burnham 421.

BURNHAM BOILERS 1 BURNHAM BOILERS 1 vector
AFC(1421) AFC(1421) vector
Burnham Burnham vector
Arkansas Razorback 421 Arkansas Razorback 421 vector
AvtoVAZ 421 AvtoVAZ 421 vector
BURNHAM-MORRILL BURNHAM-MORRILL vector