This is Martin & Co. 00-15 Grand Concert 2005 Model Natural Acoustic Guitar. It's perfect for chord strumming, as well as blues and fingerstyle playing. String : Approx. Nut width: Approx. There are traces that appear to be repairs to the strap pin mounting hole near the neck joint on the 6th string side shoulder (it does not penetrate to the inside of the body).
eBay