This is a restored decoration over the front door of one of my two parishes, Saint Bernadette. I had it redone for the 50th anniversary of the church in 2004. The original had been ruined by weather over the years and then taken down and the plain wood background painted white. A parishioner's husband duplicated this symbol from a photo of the original going back to 1954.
No one seems to know what the symbol means, however. I asked Bishop Lohmuller and Cardinal Keeler, the founding pastors, and they could not remember. The blue waves at the bottom could be the water of Lourdes since the church has always been called Saint Bernadette and was formerly a mission of Our Lady of Lourdes before becoming a mission of Our Lady of Good Counsel.
The harp and two incensers, however, are still a mystery. Obviously, the dove is the Holy Ghost. Anyone got any hypotheses?