Lookup serial numbers

https://support.fender.com/hc/en-us/articles/214343883-How-can-I-find-out-when-my-acoustic-instrument-was-manufactured-

Gemini II's were from '84 ~ '87
with that many zeros in the SN, I'd guess it's a 1984 build.

Your guitar was made in Korea, September, 1989.

In good condition it would be worth about US$800. In rare colours like white, about US$1000.

Generally speaking a used Squier guitar sells for $100 in my market.

hi!
Thre serial doesn't seem to fit any of the common schemes. Please double check that it's correct, and see if there is a letter associated with it as well.
That said, the bolt on neck Epiphone Special instruments are made in China.

From the SN alone, it appears to be a 2003. Gibson quite frequently used the first and fifth number of the serial to tell you what year the instrument was built in. But this completely depends on the model/ where the serial number is located/ if it is stamped, embedded, or located inside of a hollow body. If you can post a picture of the guitar and the serial number that would greatly help.

http://www.guitardaterproject.org/epiphone.aspx

Your guitar was made in
Korea
May c.1985
Production Number: 2353

http://www.epiphone.com/images/StringGauges.pdf, i could only find these.

Most likely it is wired like most Gibsons. The volume knobs are the two at the neck end, the tones are the two nearest the rear. The lower two are volume and tone for the bridge pickup, the upper two are for neck pickup. Switch down is bridge or lead pickup, switch up is for neck or rythym pickup, and centre position is both pickups one, where all knobs can be used together.

This will help for starters:http://www.epiphone.com/images/EpiOwnrsManul.pdf This site has good info in the discussion:http://www.thefret.net/showthread.php?t=4728 There's info here too:http://epi.p3net.net/bbs/index.php.