Here's a description of this Narcissus
Was BX 319 #2 of a PBS offering
"These date back to a mass sowing in 2004 of seed from moderately
controlled crosses of romieuxii, cantabricus, albidus, zaianicus, and
similar early blooming sorts of the bulbocodium group. Colors tend to be
light yellow through cream to white, and flowers are large, much larger
than the little gold colored bulbocodiums of spring. These have been
selected three times, and the keepers are choice."