SN 7191
Zero fret & adjustable bridge.
Sigma (CF Martin) DR-7 Acoustic Guitar 1970s (?) made in Japan
Inherited this guitar (Sigma DR-7) from my dad after he passed last year and I'm looking to trade it in and pay the difference for an electric guitar here at one of the shops.
I had never heard of the Brand Sigma before, so I've been doing a little research on my own. Interesting history of the brand! As for the model, it's a DR-7, which I've read stands for Dreadnaught Rosewood, with 7 being the grade of wood used, though I don't know what that means exactly.
I've found that it was likely made in the early 70s in Japan, and despite this being a lower-end copy of one of the Martin models, is likely solid wood rather than laminate.
The label is black and gold, clearly printed as a Japan make, and has the serial number 7191. I've read that for this brand/model the serial number is relatively arbitrary, however.
The headstock is slightly tapered and the logo is just SIGMA with the "sideways M" Greek character sigma.
It also has a zero fret and adjustable bridge, which I'm reading puts it in the very early 70s, likely one of the first couple of batches of Sigma guitars to come out of Japan.
Values and sales prices online vary widely from $100-$800 on varying sources such as eBay/reverb/etc.
I don't want to ask for too much and get laughed out of the store, but I also want to get an accurate value for trade/sale at the shop, so I'm hoping someone might know more than I can find through my internet sleuthing.
My initial thought was maybe $250-$300 asking price if the value is on the higher end since I know the shop needs to make a profit also, but I don't know if I'm on the right track there.
Any help is much appreciated!
TL/DR: early 1970s Sigma (CF Martin) DR-7 made in Japan acoustic guitar. Gold label, sigma character logo, and zero fret are indicative of one of it being one of the earlier models made.
