Sylvania flashbulbs blue dot set/11 25B original packaging vintage photography

Description

I have a vintage package of Sylvania Blu Dot Flashbulbs from the 50's or 60's, still in the original package. Originally this box came with twelve bulbs, there are still 11 inside now. These are all in great condition, don't know if they work or not, don't know anything about these. The box is still in pretty good condition given its age and I will be shipping these inside another box with bubble wrap for safe shipping/delivery.