It isn’t a tromboncino - I have several of those, and have grown those before. The mottling is in a sorry of stripes form. I was given the seedlings along with the tromboncinos and another, smaller, flatter, bright orangey squash. I haven’t seen the chap who gave them to me for ages to ask, though!
I thought that too, but the marks on the speckled swan are horizontal in all the images I looked at and the SS has a bulge where it joins the stem representing the head of the swan. But I can't find anything that is a better match.
Can you let us know the answer to the question that @Blue Onion posted above? That would help narrow it down
Billericay - Essex
Knowledge is knowing that a tomato is a fruit. Wisdom is not putting it in a fruit salad.
Could have come from a self saved seed, a hybrid of some sort - potentially crossed with an ornamental. I would err on the side of caution and not eat it.
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It does not look like a tromboncino to me either.
But I can't find anything that is a better match.
Can you let us know the answer to the question that @Blue Onion posted above?
That would help narrow it down
Billericay - Essex
Knowledge is knowing that a tomato is a fruit.
Wisdom is not putting it in a fruit salad.
The compleat squash : a passionate grower's guide to pumpkins, squash, and gourds
https://archive.org/details/compleatsquashpa0000gold/page/n5/mode/2up
https://hosstools.com/products/speckled-swan-gourd?variant=46213268963638