sca

This patch varies from the common version as it has a more fit, cut-edge. The common version features a marrowed edge.

This is a later production run of the official issue version. NASA did not approve of their use of the seriffed "NASA" font, so it was revised to a more Helvetica-like font. The rudders match the original version. 

This version retains the seriffed NASA font, but has different stiching in the rudder (two distinct rudders). 

Early production run version. Identifiable by the seriffed "NASA" and joined rudder stitching.