So today I was looking in my attic for some Christmas lights for a tube light experiment. ( some people may know what I was doing ) and I stumbled upon some old vintage fluorescent  tubes under the attic its self. I found an old black cap 20W T12 bulb called Harmony house. I have never heard of that brand before, any help on that would be great. And found a Ge bulb same specs as other bulb. And I found this old Westinghouse packaging with sadly an old Sylvania bulb and not a Westinghouse bulb in it. I’ll post a picture of all of the items. If anyone can help me find the date code of the packaging it would be much appreciated. Looks super rare.