To the OP! Your question has no definite answer without a ship date and then it is anyone's educate guess. The case pictured above was introduced sometime in 1979. The next question would be the number of cases, of the preceding style, waiting to be shipped as S&W used all available stock before changing. A factory letter could possibly mention the gun being shipped in a presentation case, but it would not have the style of liner being used. S&W used 4 different styles of liners in their presentation cases from 1960-1983. The one pictured above, 1979-1983, is the only liner where the gun pointed to the right.
jcelect