Well I'm almost certain it is, it's in the bath right now. The bottom is thoroughly encrusted, but from the shallowness, weight, handle, and heat ring I'm betting green money it is. It almost looks like it could have a diamond shape large logo in the center, similar to the Miami in size and shape, did National do a logo like that? Hard to tell under all that carbon, but that's always the best part to me, so I didn't rue the $12 it cost.
At the next place I got a 3 notch Lodge #3 for $4.50, I'm guessing an old unnamed Wagner #3 for $8, it has a smooth bottom and large 3 at the 6 o'clock in addition to the one on the handle. I'm a sucker for high quality #3's what can I say? Then for $8 I grabbed a nice #5 unnamed Wagner, and a #6 smooth bottom Wagner for $10. What I thought was a really rusty Lodge Dutch Oven turns out to be Made in Taiwan, but for $5 and dim light I can be excused. It'll clean up great, and I'll be happy getting my $5 back if I can't get $10 out of it.
At the next place I got a 3 notch Lodge #3 for $4.50, I'm guessing an old unnamed Wagner #3 for $8, it has a smooth bottom and large 3 at the 6 o'clock in addition to the one on the handle. I'm a sucker for high quality #3's what can I say? Then for $8 I grabbed a nice #5 unnamed Wagner, and a #6 smooth bottom Wagner for $10. What I thought was a really rusty Lodge Dutch Oven turns out to be Made in Taiwan, but for $5 and dim light I can be excused. It'll clean up great, and I'll be happy getting my $5 back if I can't get $10 out of it.