Yamaha YSL-6430ii and others of that era?

[Pb83]

I’m looking for a smaller straight horn, and hoping to find a good deal. I see some of these older yamaha horns from Japanese sellers that look nice, but have very little info online. The 6430ii has a .525 bore which I’d like, but that’s really all I can find. Any idea on how this horn or others of that era play?

[BGuttman]

Watch out. On some early Yamaha trombones the chrome plating on the inner slide tends to blister and flake off. You can't fix this. The edges after a blister breaks are very sharp and will wear at the inside of the outer slide.

That said, I'd look for something a little later, like a YSL 645, 683, or 630.

If you want something a little smaller, the 65x line (0.500 or 0.508 bore) are also good instruments.

[Pb83]

Adding 6510ii, if anyone has any info!

[Aznguyy]

The 6430ii is indeed a .525 bore but the bell section is 8.5inchs so I'm not sure if that fits your description of a smaller straight horn.

I can't seem to find any info on the 6510ii but you can try looking here:
https://www.yamahacollector.com/trombone