Origin of A one
Examples from the Web for a-1
They give him a sandwich, begin driving away, and the man slips back into his Walt Jr. voice to exclaim: "Have an A-1 day!"
First, the YouTube concerns: "Homeless guys don't watch breaking bad," one user says, as others note the "A-1 day!"
Dressed entirely in beige, working the A-1 cash register, it was clear that Walt no longer wanted to be Heisenberg.Latest ‘Breaking Bad’ Episode, ‘Ozymandias,’ Is Most Action-Packed Yet|Andrew Romano|September 16, 2013|DAILY BEAST
Glamour called them an “A-1 male offender,” after polling men to find out the things women wear that they hate most.
Come on down to the market an' we'll git some A-1 sirloins outen ye, anyway.The Best Short Stories of 1917|Various
A-1 is the distance from the working edge of the rail to the first dowel.Handwork in Wood|William Noyes
Everything was A-1 of course; first-rate wines to choose from, and a rattling good cigar afterwards—for me, I mean.In the Year of Jubilee|George Gissing
He seems the A-1 example of how true it is that well-known tailors' ad, "Clothes make the man."Believe You Me!|Nina Wilcox Putnam
And you'll stop yer at Sacramento in a A-1 first-class school, ontil I come back.Gabriel Conroy|Bert Harte
Word Origin and History for a-1
in figurative sense of "first-rate," 1837, in Dickens; from Lloyd's of London designation for ships in first-class condition (with the letter referring to the condition of the ship and the number to that of the stores).