It is true that some clips have a very weak or no andization. Some have that in areas, that means a section of the clip remained blank while the rest was anodized.
As for ground dugg clips; it is correct that I can't see any traces of the typical corosion that you can see on some ground dugg examples ( like the one Emilio has shown us ), it is also true that one can find near perfect clips in the ground after 60+ years. That depends on were they were lying and if they had contact with other metals such as steel. But it is also very important that the clip has not been damaged before it went into the ground. Here I can see on the last picture (post #15) that there is a tear visible, this is commonly a area were the forces of corosion can work as far as aluminium is concerned. Are there any traces of that, Chris?
It would be of help if some "diggers" could share their opinion with us in this case.
Furthermore I would like to say that I believe that I have seen pictures of this cover before and that I, back then, did also believe that the clips could be ground dugg. But then my opinion was based on much worse pictures. So I can fully understand Emilio's concerns, although I still think that this cover+clips could be ok.
Cheers
Fritz
As for ground dugg clips; it is correct that I can't see any traces of the typical corosion that you can see on some ground dugg examples ( like the one Emilio has shown us ), it is also true that one can find near perfect clips in the ground after 60+ years. That depends on were they were lying and if they had contact with other metals such as steel. But it is also very important that the clip has not been damaged before it went into the ground. Here I can see on the last picture (post #15) that there is a tear visible, this is commonly a area were the forces of corosion can work as far as aluminium is concerned. Are there any traces of that, Chris?
It would be of help if some "diggers" could share their opinion with us in this case.
Furthermore I would like to say that I believe that I have seen pictures of this cover before and that I, back then, did also believe that the clips could be ground dugg. But then my opinion was based on much worse pictures. So I can fully understand Emilio's concerns, although I still think that this cover+clips could be ok.
Cheers
Fritz
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