Don't think that is OEM? I looked through all my pics and not one FJ40 I have a pic of has that plate.
It is my understanding that it was an early FJ-55 thing.
In the past, I had ordered the ignition switch for a 1971 FJ-55 and it arrived with a large, double-sided Toyota key in that switch assembly, with that plate.

I've been on the fence on that one but would definitely buy one if it had the 100% original look. I assume I'm not the only one in that boat.
. The '73-'78 mat will not be revisited for a number of reasons. It's not trivial to reinsert the logos because it affects the grid lines. Also, as previously explained, older trucks are more numerous and it'll be difficult to fly under the radar.