Since reading your post I got the following chart from the Fender Web Site.
NOTE this only applies to Jap Strats

SERIAL NUMBERS CIRCA
JV+ 5 DIGITS 1982-1984
SQ+ 5 DIGITS 1983-1984
E+ 6 DIGITS 1984-1987
A+ 6 DIGITS 1985-1986
B+ 6 DIGITS 1985-1986
C+ 6 DIGITS 1985-1986
F+ 6 DIGITS 1986-1987
G+ 6 DIGITS 1987-1988
H+ 6 DIGITS 1988-1989
I+ 6 DIGITS 1989-1990
J+ 6 DIGITS 1989-1990
K+ 6 DIGITS 1990-1991
L+ 6 DIGITS 1991-1992
M+ 6 DIGITS 1992-1993
N+ 6 DIGITS 1993-1994
O+ 6 DIGITS 1993-1994
P+ 6 DIGITS 1993-1994
Q+ 6 DIGITS 1993-1994
S+ 6 DIGITS 1994-1995
T+ 6 DIGITS 1994-1995
U+ 6 DIGITS 1995-1996

Thanks Anyway
Tony Marra

Index:

Albert Collins Tuning	Albert Video	Aluminum Shielding	Beatles Guitars
Best Guitar Cords	Big Muffs reviewed	Bigsby for a Les Paul	Blues Lyrics
BluesHawk Review	BPM Music Express	Buddy Guy Bassman Settings	Calculate Treble Bypass Resistor
Calculate Treble	Case supplier	CE 22 Review	Chandler Lap Steels
Chord to HTML	Clapton Auction Totals	Correct Pot Value	Custom Decal Blanks
Custom Decals	Daddy O Review	Dampen Trem Springs	Dating Gretsches
DeArmond Pickups	Directional cables	DIY DeltaTone	Duncan Antiquity Review
Duncan Mini Humbuckers	Early Squier Strats	Easier Rewiring	ES 125 info
ES 335 Pro	Feiten Intonation Offsets	Fender Clapton ckt	Fender Custom Shop
Fender Customer Service	Fender Decal Procedure	Fender Japan Serial Numbers	Fender Japan Strat Dates
Fender MasterBuilt	Fender Neck Shapes	Fender pickup specs	Fit HB in P90 hole
Folk web site	Fralin Review	Fralin Strat mod	Fralins vs Antiquity HBs
Fret Buzz Finder	Fret Dressing	Fret Filing Shields	G L Legacy Pickups
Gatton article	Gatton Records	Gatton Web Site	Gibson 70s LPs
Gibson Case Locks	Gibson flaws	Gibson on the Web	Gibson Phone No
Gibson VariTone	guitar	Harp Pickups	Heritage Contact
Heritage Dating	Heritage H 555 Review	Hot Rod Lincoln lick	How Nashville Works
How To Mount Mini Humbuckers	Hum Cancelling Pickups	Humbucker Wiring Codes	Humbuckers like P90s
Its In The Hands	Jazz Guitar page	Jazzmasters	JD Telecaster Wiring
Kinman pickups	Les Paul prices 1975	Les Paul Video	List Prices
LSR nut dissent	Make Your Own Pickups	Matching pickup volumes	Mexi vs American Strats
Mexicasters	Mono cord w ES 345	Mosrite Info	No Crowning Files
P 90 options	P 90 specs	PAF myths	Parts Suppliers
Pawn Shops	Pawnshop Tips	Pearl Inlay I	Pearl Inlay II
Pearl Inlay III	Pickup Wiring By Mfr	Pitch Frequencies	Poplar Pros
Pot mod	Pot mods	Pot values	Potting Pickups
PRS Soapbar Review	PRS Swamp Ash Special	Rewiring summary	Rick O Sound
Safe Guitar Stands	Shielding FAQ	Shielding Procedure	Shielding=Capacitance
Signature Models	Slider Straps	Strat 54 reissues	Strat blend pot
Strat Plus body wood	Strat Rewiring	Strat Setup Tips	Strat Tailblock Construction
Strat Tone Wiring	Strat Variations	Suhr and Knopfler	Suhr Guitars Trip
Suhr On TX Specials	Suhr Tele Review	T Top Humbuckers	TBX circuit
Tele elevator plate	Tex Mex Strat	Top 41 Excuses	Torres Tone Knob
Truss Rods	Turn It Down	Varitone FAQ	Varitone Info
Vendor Barden	Vintage Turds	Volume pot capacitance	vs100 review
vs100 update	What is Chromyte	Who Is Ted McCarty	Why Buy Heritage
Why Poplar Opaque Finishes	Wiring Schemes	Wood Comparisons	WWW Archtop maker
WWW pickup FAQ	Zappa on Guitar