Help with info on a Wollensak, Series Ia Velostigmat, 11 1/2, 6.3

[John Fink Jr.]

I just inherited a Wollensak, Series Ia Velostigmat, 11 1/2, 6.3 in a Betax No. 4 shutter.
Before i send it out to Flutot's I'd like t get my story straight.

I have researched this lens a bit and can find only limited info.
Here's the confusing aspect of this. The front of the lens reads:

Wollensak, 11 1/2, f/6.3 * Series Ia Raptar Serial No. 653457

However the only listing here: http://www.allenrumme.com/lensdb/Convertible.html
lists this lens as Wollensak, Series Ia Velostigmat, 11 1/2, 6.3 for 8x10

Can someone fill in the gaps for me? I would greatly appreciate it.
Here's a picture of it.

[Fotoguy20d]

See this catalog

[E. von Hoegh]

The Velostigmats were re-named "Raptar" when Wollensak began coating all lenses after WWII.

[John Fink Jr.]

Thank you so very much to you both for your help.
I can't understand why my searches didn't bring up the catalog.