This is straight out of the US Catalina, not some French-Canadian car... and it also says "KILO ASSEMBLY" on the speedo face. You can't see it unless you open the cluster, I think.
I cannot figure this out. I don't know why it says KILOS and I don't know why I can't find that part number anywhere!
Doesn't really matter, it's mostly a curiosity, but I do think its weird...
I think I solved it, sort of. If you look in the other corner (and you -can- see this on installed ones from a deep angle) it -also- says MILES ASSEMBLY.
So they all say both. Why I am not sure, since those part numbers don't show up in the parts book! It must be a sub-assembly or something like that...
Here's the thing, the speedos don't indicate units. Perhaps with an internal gearing change (.62) they were produced in MILES and KILOS. 6492728 should be the "EXPORT KILOS" metric speedometer that's still in left hand drive, but that number doesn't match up.
I think the numbers on the face become part of the metric 6492728 or imperial 6492727 cluster.
That all said, a metric speedo that only went to 120km isn't all that useful. But we've got pretty good evidence they used that 120-unit face for KILOS somewhere somehow!
I think the pn's stamped are for the face plates alone which weren't serviced separately so the pn was just for internal purposes. My guess is that the supplier would stamp out the face plate and then the painting of either 0-120 or 0-200 would determine which of the two part numbers would apply. The speed indicators aren't embossed so the stamping would be the same hence the need for two possible pn's for one metal stamping.