I came across this in the past if the boot is factory Toyota, theres an
Toyoda (not misspelled) emblem on the boot itself.
I never ordered Toyota reman'd axles but, I have seen others that may have (3rd gen). Those have a sticker on the middle section of the axle. Usually in the form of a holographic sticker with Toyota on it, or a green or blue wrap sticker with Toyota and the part number on it.