oh, you have not played this one yet and are thinking about buying it ?
first, this accordion was not made during the golden era,
so it has modern reeds from modern reedmakers
any reed that carries a brand name presumably is something they
are proud of
any brand name, in or our of a consortium is likely to make many
different quality levels of reed
specific top shelf reeds are usually marketed with some exclusive
identifier or model name within the brand
the accordion maker may or may not specify what the default reeds
are in a specific model
in this reed, if it does carry both brands (Salpa and VA)
Then a logical conclusion would be these reeds were part
of Salpa warehoused stock when they were merged/acquired
into/by VA and were then double marked to note the new ownership
only they would know for sure dates and quality levels,
except of course anyone playing that accordion should be able to tell
if they are just nice Salpa reeds or awesome Salpa reeds