Differance between Mahle OC204 and OC204OF?

[454cid]

I'm seeing black Mahle OC204's and White Mahle OC204OF's online. Both are labeled (in the sample pictures) as OC204 Made In Austria. Anyone had them in hand and know what the difference is?

I was ordering filters, and so that my Rockauto purchase would not split between warehouses, I bought 1 Mann, and 3 Mahle oil filters. Rockauto had both versions of the Mahle filter. I ordered the black one.

I did a forum search and get only a couple hits for the OC204, and nothing for the OC204OF.