If your trying to be 100% timer period correct then this deck would have not been sold with that 853
They would have been sold with the new style Red decks that used the lift style pictured below:
That's interesting looking at the deck lift set up in the two pictures posted in this thread. I have a 1971 853 and it has the newer style deck lift.
Well that is interesting. I know their ad's were rather unique. My ad shows the 853 with a brown grille and white 853 letters instead of green which I have never seen. My 1556 ad's also show a brown grill. So that deck appears to be a bit different than the green one I have and yet different than the decks that are on my 1556's. I may just go with the green one, paint it red and call it a day. Thank you for all your replies on this.
Here is a picture of a 853 like the one in the ad.