Linhof Technika 6x9

I'm interested in the last Linhof Technika 23 (6x9) made without a rangefinder. I'm not sure which model that would be. Were the IV and V models made without the rangefinder? Or was the Model III the last one to not have a rangefinder?

Also, in terms of roll backs, did the Technika 23 use Graflok roll backs or only the Linhof Rolex backs?

Thanks!

The Tech 23 series only uses Linhof 23-type rollfilm backs and conventional 2x3" and 6.5x9 cm sheet film holders. There are also 2x3 Rapid-Rollex backs that fit under the 2x3 groundglass, but one doesn't see them often.

I think there was a Tech V Study Camera without the rf, unless that was a IV.