Now hold yer horses!
The style of eagle matches Albert's NA101A, but there is no rope border. The anchor is also tilted rather than straight, which matches NA101B, but again, no rope border--and there are only two manufacturers listed for NA101B--G. Floyd & Co., and C. Roth & Co.!
I'm looking at the type of backmark. Are there either dots or stars before or after the backmark? And are you sure it's MFG Co., or is it MF'G Co.?
Best Wishes,
Buckles