-Expiray date comes of /w spit
-All labels/writing on al lamps are the same
-quantity of oil is roughly the same in every amp
However, here is why I'm concerned. I have about 20 amps. And from these 20 amps, there is a variation of roughly 3 different amp sizes...so the amps are not all the same size..also some have pointy heads others do not. In addition, the oil in some amps is stuck the top and will not come down...
Not all the amps are from the same batch, however there are amps from the SAME batch that do not have the exact same amp size.
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