When " postcard" the original title what are productions codes?
# Original title Directed by Written by Original airdate Prod. code Viewers
text text text text text text real
1-20124413-1
1–1 "Tracy Returns" Susan Tully Elly Brewer 8July2002 1.1 267000
1–2 "Dares" David Skynner Elly Brewer 15 July 2002 1.2 363000
1–3 "Sneaking in Ben" Susan Tully Andy Walker 22July2002 1.3 499000
1–4 "Cam's First Visit" Susan Tully Elly Brewer 29July2002 1.4 233000
1–5 "Child Of The Week" Susan Tully Elly Brewer 29July2002 1.5 278000
1–6 "The Truth Is Revealed" Susan Tully Carol Russell 5August2002 1.6 315000
1–7 "Never Ever Wanna See Him Again" Susan Tully Mary Morris 5August2002 1.7 221000
1–8 "1000 Words About Tracy" Susan Tully Arnold Evans 12August2002 1.8 261000
1–9 "Bad Peter" Susan Tully Mary Morris 12August2002 1.9 242000
1–10 "Cam's Place" Susan Tully Andy Walker 19August2002 1.10 423000
1–11 "Dumping Ground Virus" David Skynner Elly Brewer 19August2002 1.11 444000
1–12 "Justine's TV" Susan Tully Elly Brewer 26August2002 1.12 417000
1–13 "Tracy and Cam Row" Susan Tully Elly Brewer 26August2002 1.13 526000
1–14 "Sleepover" David Skynner Mary Morris 3September2002 1.14 658000
1–15 "Parent's Evening" Susan Tully Laura Summers 3September2002 1.15 215000
1–16 "The Postcard" Susan Tully Roger Griffiths 10September2002 1.16 215000
1–18 "Helpful Tracy" David Skynner Mary Morris 10September2002 1.17 145000
1–19 "Friend" David Skynner Laura Summers 17September2002 1.19 815000
1–20 "Treasure Hunt" David Skynner Laura Summers 24September2002 1.20 234000
1–21 "Romance" David Skynner Elly Brewer 24September2002 1.21 415000
1–22 "Temporary Care Worker" David Skynner Othniel Smith 1October2002 1.22 615000
1–23 "Cut The Weed" David Skynner Graham Alborough 1October2002 1.23 522000
1–24 "Need Armbands" David Skynner Laura Summers 8October2002 1.24 195000
1–25 "Miss You" David Skynner Mary Morris 8October2002 1.25 395000
table_20124413_1
SELECT Prod. code FROM table WHERE Original title = "The Postcard"
"The Postcard"