This grower is fairly sure of this plant identification.
Date palm saplings grown from seed collected from the fruits of a 20m+ specimen tree in Andalucia that I think is Phoenix canariensis but could be Phoenix dactilyfera. In a tall rose pot, so should live happily as a container plant without repotting for some time. Each new leaf is getting wider, and eventually the leaves split into fronds. I have 2 of these available of very similar size.
Canary Island date palm, Date palm, Palm
Phoenix canariensis (Canary Island date palm). This is a large palm it will grow about 5m tall with a spread of 9m, The leaves are arching with deep green fronds. The small yellow flowers are drooping in clusters in the summer, after you will find orange-yellow, acorn-like fruit.
They prefer full sun but will happily tolerate partial-shade.
Italics = data drawn from parent genus or speciesView Full Plant Finder Record