Got this in from collector Dave Rohlfing:

This is an interesting item in that it is not what people think it is. When our Lodge was installed after merger in 1995, these gold flaps were passed out to attendees at the Conclave. The actual first flap was the one with black edge. Confusion arises because they were issued at same time. Technically it is a Conclave patch without a date. I got mine at the 1995 event. BTW we also have one with a silver edge for distinguished service. It is a youth award called the Silver Flap Award, looks just like S1. It too is a sidebar issue. All of our conclaves since 1995 have dated patches.