I know that there where only little of the Tournaisis left to breed with, same as with the Olandsk Dwarf. To breed a healthy community they added other genes. Like OEG and other similar chickens. Maybe they did the same to get a healthy community of Olandsk Dwarfs too? This also would explain the similarity of the two breeds.When mine was just born, she was very much a little chipmunk.
Not sure of the specs bit I do agree, your birds look very much like these. Super pretty!! That big rooster is just gorgeous!!