Required information

[The following information applies to the questions displayed below.]

The stockholders equity section of Velcro World is presented here.

VELCRO WORLD
Balance Sheet (partial)
($ and shares in thousands)
Stockholders' equity:
Preferred stock, $1 par value	$	4,600
Common stock, $1 par value		16,000
Additional paid-in capital		401,000
Total paid-in capital		421,600
Retained earnings		274,000
Treasury stock, 12,000 common shares		(216,000	)
Total stockholders' equity	$	479,600

Based on the stockholders' equity section of Velcro World, answer the following questions. Remember that all amounts are presented in thousands.

Required:

1. How many shares of preferred stock have been issued? (Enter you answer in total number of shares, not in thousands.)