I should have mentioned the prefix letters are not stamped on the frame, you have it all...
If that's you real serial number you have the 336th unit out of Oakland...that's a very low number!
Mike B

Ah, that is funny. That blob does cover up a tiny portion of the '2', so I just figured the 'W' was entirely covered.
I thought it was a fairly low serial number, but wouldn't it be the 1,336th unit out of Oakland? It is kind of cool that it's the very first of the new Task Force style, being a 2nd series '55. Not that any of the original body is left, however.