Japanese Scout-Leaders wanting to trade necker?

I will be travelling trough japan from 12.04.2026 to 03.05.2026. Does any local scout-leader (or scout) want to swap neckers?
I am a Scout Leader from Austria, 25m, and I would love to extend my necker collection. I can bring multiple neckers too.

I will be in:
Tokyo from 12.04-14.04
Matsumoto from 14.04-17.04
Kyoto from 19.04-22.04
Osaka from 22.04-26.04
Tokyo from 27.04-03.05

Austrian Necker I would be bringing