Varying reflective standards on the same sign...without greenout

[Emma]

So, I drove under these two signs on M-10 N in Detroit recently, and I saw something I never noticed before:

https://goo.gl/maps/T2lMi

https://goo.gl/maps/NdwJC

Not only is there a random line of FHWA font on each sign (which MDOT hasn't used for BGS destination legends since the early-mid 2000s), the FHWA characters are more grey than white, and noticeably less reflective at night. They look old compared to the rest of the sign.

I'm confused as to how (and why) both signs were fabricated with old and newer reflectivity standards. It's not greenout, because only the out-of-place FHWA lettering reflects differently, not the surrounding green, and MDOT doesn't use demountable copy.

Any ideas, or other examples?

[SignGeek101]

Very interesting indeed. Could MDOT be going back to FHWA fonts? I know Iowa did about a year ago,

Considering the old signs had Clearview versions of the text, and it was greenedout somehow... I don't know. I guess there could have been some vandalism on both of those signs, and the patch (which is well hidden) was in FHWA.

By the way, welcome to the forum.