If it does not have an "X", I NEED IT!

This page is keyed by Blue Book 2 but has been modified to add new issues. The order may or may not be correct.
X 491B F1 RED R M/C BLK GRN RED 'CHARTER MEMBER'
X 491B F2a BLK R M/C BLK GRN 1st regular issue, GRN FDL on DGR grass
X 491B F3 YEL R M/C BLK GRN FDL; NOAC94
X 491B S1 BLK R BLK BLK BLK FDL; NOAC96 ghost flap
X 491B F2b BLK R M/C BLK GRN GRN FDL on GRN grass
X 491B S2 RED R M/C BLK GRN FDL; JAM97
X 491B S3 YEL R M/C ORG ORG NOAC 1998
X 491B S4 BLK R M/C BLK GRN Same as F2b but fully embroidered
X 491B A1 GRY C BLK YEL "491 ELANGOMAT", No name
491B X1 Ceremonies odd shape