Kalavinka Super Exhibition track bike build

So got a reply:

About the tubes of TA100527,
Main tube set is Kaisei 8630, Ni-Cr-Mo, 0.8-0.5-0.8mm thickness. But down tube is 8630R, 0.7-0.5-0.7mm.
Best regards,
Masaki Nagasawa
Assistant
Tsukumo Cycle Sports

So yeah, kaisei tubing.
So all tubes are Kaisei 8630 Ni-Cr-Mo, bar the down tube which is kaisei 8630R. Both seem to be mid/high range tubing judging by their price and are both oversize tubesets.

So I think the sizes are as follows:
Top Tube 28.6
Down Tube 31.8
Seat Tube 28.6
Head Tube 31.8
Seat post 27.0

Seems odd as the TT looks smaller than the ST. Plus the seat post diameter is defo 27.2. The measurement given, 27, was only a recommendation though.

This is quite interesting with regard to how the frames design came about.