Sg 1000 yamaha guitar with serial no. 005080. could not find any info...invalid numbers..please help me...tnx alot..really appreciate

Consult a expert locally on this, this site doesn't really have this kind of information.

Peter, punched serial # into Data base,Your guitar was made at the
Nashville Plant, TN, USA
January 15th, 2002
Production Number: 554
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http://www.guitardaterproject.org/gibson.aspx
http://archive.gibson.com/en-us/Lifestyle/ProductSpotlight/GearAndInstruments/Gibson%20Serial%20Numbers

As a guitarist myself, and from my understanding, Yamaha Pacifica guitars should have a "PAC" number on it. Check here for more info:
https://en.wikipedia.org/wiki/Yamaha_Pacifica

Gibson 1961-1969 Custom SG reissues since 1997
YYRRRM
Y is the production year
RRR(R) indicates the guitar's place in production for that year.
M is the model being reissued
Reissue model codes:
1= SG Custom and Special
2= SG Standard
3= 1963 Firebird 1
4= 1964 Firebird III
5= 1965 Firebird V & VII
8= 1968 Les Paul Custom
So I think 737582 would mean the guitar was the 758th Custom SG Standard built in 1973. See this... http://www.gibson.com/en-us/Support/SerialNumberSearch/Default.aspx

our guitar was made at the
Nashville Plant, TN, USA
September 15th, 2004
Production Number: 6

Do you have any pics of this guitar, a picture is worth a thousand words, this might help in the identifying of this guitar, if so just post them to this answer and I will see if I can help...

What you have listed is an invalid serial number. If you go to:

http://www.yamaha.com/apps/guitararchives/guitarserial.htm

you can type in the serial number and get your answer.

According to yamaha's site, that's an invalid serial number??!!??

I would guess that might be the date code.

Other sites report 5, 6 and 8 "digit only" serial numbers.

Nothing for 7 numbers.

If i had to guess, the earliest...1971
Hope this helps.

Here is a site:

http://vintageguitarpro.com/serialyamaha.shtml

You need the letters preceeding the serial number and knowledge of the decade it was made.

Santana's had quite a few guitars, take your pick:
1972 - Gibson Les Paul / Gibson SG Special with Humbuckers / Gibson L-6S
1975 - Gibson SG Special with P90 pickup (Woodstock Festival)
1976 - Yamaha SG 175B / Gibson SG Special with 3 Open Coils
1982 - Paul Reed Smith (PRS) Custom
1988 - PRS Santana II with PRS Santana III nickel-plated pickups and .009-.042 D'Addario strings