UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


SCHEDULE 13G

Under the Securities and Exchange Act of 1934
(Amendment No. __________)*

Esco Electronics Corp.
(Name of Issuer)

 Common Stock
(Name of Class of Securities)

269030201
(CUSIP Number)


Check the following box if a fee is being paid with this statement
    (A fee is not required only if the filing person:  (1) has a 
previous statement on file reporting beneficial ownership of more than 
five percent of the class of securities described in Item 1; and (2) 
has filed no amendment subsequent thereto reporting beneficial 
ownership of five percent or less of such class.) (See Rule 13d-7).

*The remainder of this cover page shall be filled out for a reporting 
person's initial filing on this form with respect to the subject class 
of securities, and for any subsequent amendment containing information 
which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not 
be deemed to be "filed" for the purpose of Section 18 of the 
Securities Exchange Act of 1934 ("Act") or otherwise subject to the 
liabilities of that section of the Act but shall be subject to all 
other provisions of the Act (however, see the Notes).

CUSIP # 269030201		SCHEDULE 13G	     Page 2 of 4

1.	NAME OF REPORTING PERSON
	S.S. OR IRS IDENTIFICATION NO. OF ABOVE PERSON

		Donald Smith & Co., Inc.    13-2807845

2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) [ ]
(b) [X]

3. SEC USE ONLY

4. CITIZENSHIP OR PLACE OF ORGANIZATION

A Delaware Corporation

5. NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 
SOLE VOTING POWER:
	0 Shares

6. NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 
SHARED VOTING POWER:	
0 Shares

7. NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 
SOLE DISPOSITIVE POWER:	
	0 Shares

8. NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 
SHARED DISPOSITIVE POWER:
	0 Shares

9.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
0 Shares

10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN 
SHARES

11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9:

Less than 5%

12.  TYPE OF REPORTING PERSON:		IA
	

	SCHEDULE 13G		Page 3 of 4

Item 1(a)	Name of Issuer:
		                  Esco Electronics Corp.

Item 1(b)	Address of Issuer's Principal Executive Offices:
		 		8888 Ladue Road
St. Louis, Missouri  63124	
			
Item 2(a)	Name of Person Filing:
	Donald Smith & Co., Inc.

Item 2(b)	Address of Principal Business Office:
East 80 Route 4 - Suite 360
		Paramus, New Jersey  07652

Item 2(c)	Citizenship:  A Delaware Corporation
Item 2(d)	Title of Class of Securities: Common
Item 2(e)	CUSIP Number: 269030201			
Item 3. This statement is filed pursuant to Rule 13d-1 (b), 
and the person filing is an investment advisor registered 
under section 203 of the Investment Advisors Act of 1940.
 
Item 4(a):	0 Shares Beneficially Owned
Item 4(b):	Less than 5.0% of class
Item 4(c)
   (i)	0 sh. (sole power to vote)
   (ii)	0 sh (shared power to vote)
   (iii)	0 sh. (Sole power to dispose)
(iv) 0 shares (shared power to dispose)

Item 5     OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
	If this statement is being filed to report 
the fact that as of the date hereof the reporting person has 
ceased to be the beneficial owner of more than five percent 
of the class of securities, check the following [X]		

	
Item 6	OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF 
ANOTHER PERSON

	N/A

SCHEDULE 13G		Page 4 of 4

Item 7   IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY 
WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT 
HOLDING COMPANY

	Not applicable

Item 8    IDENTIFICATION ANE CLASSIFICATION OF MEMBERS OF 
THE GROUP

	Not applicable

Item 9     NOTICE OF DISSOLUTION OF GROUP	
	Not applicable

Item 10
		
	By signing below, I certify that, to the best of my knowledge 
and belief, the securities referred to above were acquired in the 
ordinary course of business and were not acquired for the purpose of 
and do not have the effect of changing or influencing the control of 
the issuer of such securities and were not acquired in connection with 
or as a participant in any transaction having such purposes or effect.

	After reasonable inquiry and to the best of my knowledge and 
belief, I certify that the information set forth in this statement is 
true, complete and correct.

Date:	February 5, 2001

/s/ Donald Smith

Name:   Donald Smith
Title:  President