Acquiring, valuing and assessing brown dials is a skill that requires skill, experience and a little luck. The value difference in them is enormous.
Here is my favorite brown dial, along side another, later 145.022-78 that cost under $2000. The price of $10,000 on the brown is my estimate. I bought it for less, and would not sell it – even for much more.
That’s the problem with browns, not many people want to let go of the good ones.