Table:
text: Looney Tunes and Merrie Melodies filmography (1940–49)
1946
1946
Title Series Director Production_Number Release_date
Acrobatty Bunny LT Robert McKimson 3-15 1946-06-29
Eager Beaver, The MM Chuck Jones 2-16, BR 1354 1946-07-13
Great Piggy Bank Robbery, The LT Bob Clampett M-4-15 1946-07-20
Bacall to Arms MM Bob Clampett 1017 1946-08-03
Of Thee I Sting LT Friz Freleng 3-16, BR 1260 1946-08-17
Walky Talky Hawky MM Robert McKimson 4-16, BR 1353 1946-08-31
Racketeer Rabbit LT Friz Freleng M-5-15 1946-09-14
Fair and Worm-er MM Chuck Jones 5-16, BR 1401 1946-09-28
Big Snooze, The LT Bob Clampett (uncredited) L-6-16 1946-10-05
The Mouse-Merized Cat MM Robert McKimson 7-15, BR 1404 1946-10-19
Mouse Menace LT Arthur Davis 1028, BR 1358 1946-11-02

Question: What is the serial production number of M-4-15 in the 1946 filmography of Looney Tunes and Merrie Melodies (1940–49)?