In reply to The expansion bands on these by FifthAvenueRes…
Here is a bit of history on Gold...
The Gold Reserve Act of 1934 made gold clauses unenforceable, and changed the value of the dollar in gold from $20.67 to $35 per ounce. This price remained in effect until August 15, 1971, when President Richard Nixon announced that the United States would no longer convert dollars to gold at a fixed value, thus abandoning the gold standard for foreign exchange
At $35 a ounce, a Gold filled band would not have a $20.00 bump in 1958, because it cost the same from 1934 to 1971 factoring in inflation...a combination of movement quality, case composition, and band composition might, or were they were using it as a price leader....and why would they put a Gold filled band on a RGP case??