My friend gave me a Hugh bag of lemons to make Marmalade. They are round and thin skinned. I tasted a small piece and it was as sweet or sweeter than any Meyer that I have tasted. When I peeled away the skin it smelled like a Meyer lemon. Inside they are just slightly green. they are also very juicy, I am so surprised that I have cut up dozens and not one seed. So I am wondering what this might be, since I used google and didn't find anything for seedless Meyer.