I have been searching on and off for years for more teaspoons like these. They are perfect- a bit bigger than the (it would appear) standard teaspoon, a bit smaller than a dessert spoon - and I only have three left, one of which DD is begging to have at uni! Attached photo shows the comparison. The one I like is on the far left- dessert spoon on the right and middle ones are Just. Not. Right.
I’ve had them for over 25 years and don’t have a clue as to where I got them.