999 Locomotive, Embossed Pilot (cow catcher).
The rivets, top and bottom of the pilot, are on a raised ridge, and spokes are embossed on the pilot, vertically, between the two rows of rivets. There are four main variations of the pilot on the 999, plus various other casting differences, which are clearly indicated on Eric McFadden's excellent site. (Please see Marx front page for link).
