They do appear to be for the same couple. The first time on 27 Mar 1916 (Monday) in Seattle, Washington by a Baptist Minister. And the second time on 19 Mar 1919 (Wednesday) at the King County Court House (in Seattle, Washington) by a Justice of the Peace.
Interesting, the Date Filed is left blank on the second one, even though markings on the copy seem to indicate that it was in fact filed.
I wonder if something happened that they somehow lost the record of the first marriage and perhaps needed proof, so quickly did the second?
Maybe the first was a quick wartime bride thing (even though the license was 4 days earlier), and they didn't feel they knew each other well enough, so remarried after he returned from the war?
The first was during the middle of WWI and the second after the war was over. Does Alfred have any military records for that time period?
(just throwing out random facts and guesses to see if it sparks anything for anyone else)