This grower is sure of this plant identification.
I have around 60-80 spanish bluebell bulbs of varying sizes from tiddly to 4cm across. Happy to swap the lot or smaller quantities.
Spanish bluebell, Giant bluebell
Hyacinthoides hispanica (Spanish bluebell). The species is quite easy to grow. It will reach about 30cm in height and will flower in the spring. The flowers are about 25mm wide; the nodding and bell-shaped flowers are lilac to blue. The bright green foliage is strap-like.
Plant the bulbs in the autumn 10-15cm deep.