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i think if there is an invisable getter present then i think its safe to say that when fired it was there but gassey and other things that may go wrong with a crt may have taken several factors away from the getter where it no longer looks the way it should. but of course air would have turned it white. i have a sylvania 7jp4 with such a getter, can bearly see anything aside from what looks like a rainbow as a getter and the tube bearly shows a pic in the dark. some would think that there are still people around that was there in the day building these tubes and know what is what when it comes to these questions regarding crts but then again they may be up in age and not be able to recall all the info that may be asked of them. so i guess we are left to guess or assume what may be or not be wrong with a given crt, either way we are left with what we have working or not and may never be able to get a crt rebuilt to the degree of standing up and lasting longer then the set it self.
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