It's a jaw-dropping learning experience ... I now see that my perception of things has been wayyyyy too simple. I deduce from friends and books that meteoric pamor will have shades of gray and brighter tones instead of a uniform, almost evenly distributed color.
So, based on my novice-level understanding, I was prepared to guess that either A, B, and C are some sort of modern nickel aloy while D and E are possibly natural meteoric ... Prior to your post, I have totally NO IDEA how mild and nickel and iron and nickel will look like when being used as pamor.
I need quite some time just to properly absorb the material you presented in this thread alone ... The last time I met with Pak Haryono he said it would be a good idea to create a graduate study program in kerisology. NOW I understand the need for such idea!! Many many thanks for your information. It's time to turn off the PC and make some calls to improve my network