This is a clone build of an Estes Black Brant III kit (1296) from circa 1980.  Not to be confused with the later, larger Black Brant II that came out later.  The only real deviation from stock is the use of basswood instead of balsa for fins. 

Update: this model suffered a fatal landing on its third flight, buckling above the fins on a hard impact with the dirt.  Not really fixable.  I will, however, likely build another.