Mills MRA two types of different brand ?

thank you very much!
 

i have two types of mills mra12
- the first one is dull brown and marked : "mills 1ohm mra12f 1019"
- the second one is shiny brown and marked : "mill mra12 1ohm 1% m1713 mexico"

like these:
http://www.partsconnexion.com/media/product/resistors/mra12.JPG

what is the newer between the two that " is warm, not lean, slightly soft and dull, and doesn’t have quite as much detail " (salectric cit.)?

I cant comment on how the newer ones sound compared to the older ones made in the USA but I would not call the newer brown shinny ones slightly dull and warm. I replaced the sand resistors in my Dynaduio S 25,s with them and they do not sound dull and warm to me compared to how the s 25,s sounded before quite the contrary I would call them fast, detailed, tonally correct with alot more micro dynamics.

i’m refering to the color of boby not sound.

Actually your second questions ask how do they sound along with selectric talk about the sound. I was only trying to help excuse me.