Hi MZ and welcome to the board

Your blue bird is certainly not a Scandinavian piece...
Leo ward sometimes used paper labels that were eventually washed off and there is also Ron Ray of Terra Studios who almost always signed his birds, but not all, especially if they were seconds or faulty.
With those marks on it I would guess it is a second and I would go with Ron Ray or Leo Ward.
It would be really helpful if you were to post these pictures as actual pictures rather than links. We have had a problem in the past where links no longer work or disappear and then the information is no longer there for reference, and many of us rely on looking back at links for reference to new queries, so if you can change these pictures or ask a moderator to help you do that it would be very useful in the future.
If you go to the heading at the top of the page where it says Home, there is also a link for 'search' and you can put Bluebird of Happiness, or Ron Ray or Leo Ward in there and come up with other links that may help to reassure you that yours is one of their birds.