Shared technical story · 2015–2016
From ounces to gramsThe 2016 metric transition
The 2015 standard Gold and Silver reverses omitted their customary weight and fineness inscriptions. In 2016, Gold moved to 30, 15, 8, 3 and 1 grams while standard Silver moved to 30 grams. The page shows the documented change without inventing a policy motive.
One technical turning point is shared by Gold and Silver rather than repeated twice.
Technical comparison
The change, read side by side
2015 supplies the final ounce-era context; 2016 supplies the new metric specifications. Standard objects are compared without pulling in refined or platinum companions.
2015 · Before
Weight and fineness omitted
2016 · Metric
Gram weight and fineness return
Specification anatomy
Five gold weights, one standard silver weight
The official issue notice lists 30, 15, 8, 3 and 1 grams for Gold, plus a 30-gram standard Silver coin. The specification change is the story.
2015
Inscription pause
The customary weight and fineness wording is absent from the standard reverses.
2016
Specification reset
Gram-denominated structures appear in the Gold and standard Silver notices.
Boundary
No invented rationale
The page states the published specifications and visible change, not an undocumented policy reason.