Check My Numbers Please 182 And 206

I *think* I have these correct, but please double check me.

All are perf 12. I know the first three have the lower secret mark, but only believe the last two do as I can not see through the cancels.

The first three do not have the mark near the U.S. The last two do.

I have no idea which colors are which on the first three, but am pretty sure the last two could be gray-blue.

Is it this hard for everyone? Does it get easier?

182:







206:

The two 206 stamps are correct. But the other 3 stamps might not be 182. The first two appear to have then secret mark on the largest ball above the "E" of "ONE". They could be 156 or 182. The third stamp does not appear to have the secret mark but the photo is too small to be certain. If it does not, it is a 145, unless it has a grill which would make it a 134.

Does this muddy the waters?