I was hoping someone else would give a short answer, I'm not known for that ;), so here goes.
Your pan was made by Wagner in Sidney, Ohio sometime after Griswold was bought out in 1957. The earlier, Erie marked 962 pans are a bit nicer, but don't pay an arm and a leg to get one.
I think BS&R made a better pan. They have the word Aebleskiver on top of the handle and Made In USA on the bottom. Nothing else. Nice smooth hemispherical cups and relatively compact. They show up on eBay all the time. One there right now with a Buy It Now of $20.99 or Best Offer.
The smoothest, glass-like finish I've ever seen is on the Wagner 1312 pan made before WWII. Unbelievable finish.
Tom
(Wow, that's a short answer for me ;D)