I don't know for sure--due to its resolution--if this is a different type of flat Centuri blast deflector, or a variation of a 1960s-type one instead, but on page 53 of their 1972 catalog, under the "Launcher Accessories" heading (see: http://www.ninfinger.org/rockets/no...a/72cen052.html ), there is featured a flat, angled blast deflector that appears to be designed to slide over the cross-member of a sawhorse (for a multi-pad rack launcher). I can't see it quite clearly enough at that resolution, but it looks like *this* http://www.ninfinger.org/rockets/ca...68/68cen26.html "Launcher Assembly" pad's blast deflector, in the 1968 Centuri catalog. They appear to differ in that the "sawhorse" one looks like it has upward-angled "wings," while the 1960s one is a flat rectangle of sheet steel, bent "forward to back" in two places.

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