The pan handle is probably made with Bakelite, a thermosetting plastic that survives heat well. Until recently, most pan handles, except on cast iron or enamled cookware, were made of this material.
I have a stainless steel pan with a black bakelite handle that was inadvertantly left in my oven through a self-cleaning cycle. My oven fires up to 550' F. during a self-clean. The metal is badly discolered, but works just as well as it did before the incident. The handle wasn't damaged at all.
I would guess that your pan is probably safe in the oven. Just remember that the handle, even though it is made of plastic, will still require the use of a potholder when you remove the pan from the oven. It will be hot.
And also remember, that as I can't actually see or touch the pan, my post is merely a guess.
Seeeeeya; Goodweed of the North
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