This grower is sure of this plant identification.
Paperbark maple, Maple
Acer griseum (Paperbark maple). This species of maple will give you great interest all year. In the spring the leaves are a dark green above and a silver underneath; they are toothed and about 5cms long. The bark is peeling and reddish in colour, and the leaves are palmately lobed and will become very red in the autumn.
Grow in moist well prepared soil, and in sheltered conditions in a good soil.
Shade, ornamental bark, foliage, specimen. Autumn interest.