Deciding to raise a vanished tower again always carries a choice: restore it as it was, or build something of the present. Shinsekai chose the latter.
Thirteen years of absence
The first Tsutenkaku was dismantled in 1943 (Ep.3), and the present tower was rebuilt in 1956 Fact. For those thirteen years Shinsekai had nothing that symbolised Shinsekai Estimate. The name remained, but the face was missing.
A tower of the same lineage
The designer of the rebuilt tower was Naito Tachu, who also worked on the Nagoya TV Tower, the Sapporo TV Tower and Tokyo Tower, built around the same period Fact. This matters: the tower at the centre of Shinsekai is not an Osaka-only object but belongs to the same lineage as the towers that define postwar Japan Estimate.
From imitation to lineage
Here lies the difference between the two towers. The first was an eclectic structure stacking two imported European symbols (Ep.3). The second sits in the line of towers postwar Japan raised with its own technology Estimate. A district that had imitated the outside stepped, in its rebuilding, into a domestic lineage Estimate.
How to look at this tower
Two things are worth holding in mind at Tsutenkaku. First, this is a rebuilding, not a restoration — what vanished was not revived but built again as an object of another era Estimate. Second, the Billiken of Ep.4 sits on the observation deck Fact. The sole survivor of 1912 sitting inside a tower of 1956 is itself a summary of Shinsekai.