Replacement FBD (yellow edge) filter set for Thomas sodium vapor Super Safelights
Kodak Cat. No. 1796689 5½-inch diameter No. 13 (amber) safelight filter.
Kodak Cat. No. 1521517 5½-inch diameter No. 1A (light red) safelight filter.
Kodak Cat. No. 1521541 5½-inch diameter No. 6B (brown) safelight filter.