Effective period / Period of releases: 1963

No such orchestra exists, except as "pickup" orchestra, existing only for the purposes of ad-hoc recording - note the English name.

However, genuine orchestras may appear under this name, so it is worth checking other versions of recordings (and the artists credited) for bona fide orchestras with an Austrian connection.
Consider using Wiener Symphoniker, Wiener Philharmoniker, Orchester Der Wiener Staatsoper, Wiener Volksopernorchester.