$55-56 iirc. I recall the Eco credit being 3.5k at the time and I didn't have some of the other discounts and thought sub 50k for a 64k msrp was fairly good.
'06 M3 Silver/Gray
'11 X5 35d Sparkling Bronze/Oyster
'88 M3 Silver/Black, 47k Miles, Stock, Garage Queen...