Hi David, hi Neil,
if we are talking about KV-1s tracks like this ones:
http://www.miniarm.com/miniarm/img/armor/DSC00241.jpg , purchased by miniarm too, they are much more widespread in scale drawings (and inherited from that very often ;-)), than on real tanks pics.
But that said they CAN be found on pics of real tanks:
1.) KW (issue #168) from militaria (poland) pg. 36, lower pic. Same pic as in tankograd, KV-1 late variants, pg. 36 upper pic.
2.) KW (issue #168) from militaria (poland) pg. 63 upper pic.
3.) Lwy Stalina (issue 272) from militaria pg. 57
All depicted vehicles are of "in action" tanks, not of prototypes or museum-vehicles (although some pics seem to be a little staged;-))
HTH
Volker