Any special reason for wanting a Raptar? And I take it you are looking for an "Enlarging Raptar". They also made a "Pro" series.
I think the standard focal lengths were 135mm and 162mm.
Not generally regarded as a very good lens - sample-to-sample variation is rather great with Raptars, so test or get return privileges.
Nicholas,
Is there a difference in quality between the regular Enlarging Raptar and the "Pro" Enlarging Raptar? A 162mm Pro Enlarging Raptar found its way into my darkroom recently, but my go to lens for 4x5 is a 150mm Rodagon.
I really like the Rodagons, I have one for each format that I use. However, I've been using a NOS 1947 100mm Enlarging Ektar lately that I got real cheep. I am blown away by the quality of this lens, I may even sell my 105mm Rodagon as I like the Ektar so much. This is saying something as I generally prefer Rodagons over nearly any other enlarging lens.