Antique Early Ironstone Blue & White Willow Platter; Stapled & Unglazed on Back

Description

I am fascinated by this platter.  It has so many features that indicate its very early ............ to the point when the British were trying to copy the Chinese.  It's a  Very Early Ironstone Willow Platter with an unglazed back which is marked with a mark I can't decipher that was written into it when the clay was wets, shown in photo 6.  There are extremely old staples maintaining it.  There is a small glaze loss shown in photo 3 and an odd black spot showing in photo 4 directly at 9 o'clock on the piece.
It measures just under 10" by 12.6.  I apologize for the shipping price; it's very heavy.  I love these mystery pieces !