Book value
From ACT Wiki
The value as recorded in a company’s books, in other words its accounts including its published balance sheet.
Historically the book value of an asset was normally its original cost less any depreciation or other write-down in value. This is distinct from market value, the fair market price which the asset might be expected to raise if offered for sale.
More recently, accounting practice has been moving toward a system of book valuation which is aligned more closely with market values.
See also