Half Moon Lodge issued a service Lodge flap when it hostd the NE-3B Conclave in 2005 the S29.
There was a prototype of the flap made witha white background.
The Blue Book stats are:
YS2 BLK R WHT BLK YEL FDL; BLK Rip Van Winkle Council BSA & NE-3B Welcomes the National Chief, Service Lodge