This dirty little-Heart — Holy Chest

This dirty-little-Heart 1
Is freely mine.
I won it with a Bun-
A Freckled shrine-

But eligibly fair 5
To him who sees
The Visage of the Soul
And not the knees.
(F.1378/J.1311)
[1] Heart:: a heart-shaped chest.
[3] Bun:: a small, round cake. won:: in a competition of cake.
[4] shrine:: a chest with sacred images.
[5] eligibly fair:: suitable and fine.
[7] Visage, Soul:: the image of saints on the shrine.
[8] knees:: knees of the chest.