Vintage Sylvania Blue Dot Flashbulbs M3B M3 Lot of 22 Camera Bulbs Made in USA‎

Vintage Sylvania Blue Dot Flashbulbs lot including one box of M3B (twelve blue bulbs) and one box of M3 (ten clear bulbs, missing two bulbs).  Condition: Good vintage condition. Both boxes show moderate shelf wear, minor writing on the packaging, light crushing, and one box is missing two bulbs (see photos for details).  Includes a total of 12 blue and 10 clear camera flash bulbs as noted on the included whiteboard. The blue bulbs are Sylvania Blue Dot M3B and the clear are Sylvania Blue Dot M3. Actual bulbs are held in cardboard trays as shown.  Made in USA by Sylvania Electric Products Inc., Montoursville, PA. Markings and detailed flash tables are printed on the back of each box for camera and film compatibility.  These are vintage single-use flashbulbs for classic film cameras and display, not intended for modern equipment. Please review all photos for condition and quantities included.