Reading something from our esteemed colleague in Macedonia about an Alexander Vienna F tuba, I looked around for images to see just how different that would be from the average F tuba, and what do you know - there's one on the market. In São Paulo, Brazil, on their equivalent of ebay.
Tuba Alexander Profissional Vienna Em Fa 6 Rotores Viennense
Price isn't all that bad, but I think you'd end up having to pick it up in São Paulo, which would add significantly to the cost. But it's summer, 84°F there as I write this, 40% humidity, might be a nice break.
