Thunderbolt Company has 100,000 shares authorized and 50,000 shares issued of $100 par, 8% preferred stock and 700,000 shares authorized and 400,000 shares issued of $1.00 par common stock. 20,000 shares of common stock are held in the treasury costing $170,000. The preferred stock is cumulative and has 2 years dividends in arrears. Thunderbolt wishes to pay a dividend this year to preferred stock and common stock. The current balance in Retained Earnings is $1,600,000.

Determine the maximum dividend per share that can be paid to common shareholders.