They don't come much better than these.
The strips absorb tarnish-producing pollutants; the gel absorbs moisture that contributes to the acceleration of tarnish.
BANG from Italy 1:
Mackennal is retained, but a new reverse design by W.
One must consider the amount of luster, wear to the leaves on the reverse and wear to other features when grading them.
The slurry is then applied with a moist cellulose sponge.
Oversized magazine format.