Chitting slow

My husband is chitting some seed potatoes. They have not changed in 4 weeks
. The eyes are very small. He had them in egg boxes by the shed window east facing.
Any suggestions? If he plants them as they are will they still grow and produce potatoes? They are early type but i don't know the variety because in tidying up after him I threw the label away

Any suggestions? If he plants them as they are will they still grow and produce potatoes? They are early type but i don't know the variety because in tidying up after him I threw the label away

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A bit of 'loose' guidance from what I have picked up down the years, most people chit earlies, some people chit second earlies as well, main crop not usually.
So there is a link to chitting and getting early crops.