Sigma guitar

[munch]

I have a nice Sigma guitar and would very much like to know the model number, the year it was made, and an estimated price. I've been asking around and until now I've uncovered that Sigma guitars were affiliated with Martin guitars. But as far as I am told Martin have no record of when or how many Sigmas were made. I've also been told that it is from around 1990, but it has all been guesses. So please help me out here!
On the head it says: Sigma Guitars Est. 1970.
On the backside of the head there's a sticker that says Japan, and inside the body is stamped: 609919

[jedistar]

http://www.sigmaguitars.com/pastmodels.html

[VintAxe]

Hmmmm, I didn't know there were Sigma brand archtop guitars. I may have some information mixed in with my Sigma acoustic guitar literature, but it will require some digging to find it.

In the meantime, here is a Vintage Guitar article by Michael Wright that describes the history of Sigma Solidbody guitars.

[munch]

Thanks for Your replys!
I hope You can find something in your archives Vintaxe!
I have found some other Sigmas on Ebay with model description SEJ-35, SEJ 75 and /or EJ 75, But still nothing with a picture that match my own Sigma

[Sigma]

Hello Denmark!
I also have a Sigma almost like yours (The body is identical, but the head has more "ebony"). My guitar was bougt here in Norway in the early 80-s (Probably 82 og 83). Unfortualy, the head of my guitar was broke off during a gig (the guitar tilted out of its stand), but are now repaired. A similar guitar to mine was sold by the Swedish Vintage Guitar Dealer Halkan, http://www.halkans.com,
I have used this guitar in a varity of music styles from Norwegian Folk Music to Blues and Country, but I feel it has its challenge in jazz-style with its rich mid-tones from the two humbuckers. If you get an estimate of the worth of this guitar I am realy interested to know, because I realy dont use it anymore and considering to sell to anyone lookin for a vintage!