travisfling said:
It is a bowed back, so I assume that means the spruce top. Hard tellin', but it's all that sweet, sweet wine colored stain, like the pichers up further in the thread.
Apparently, during the transition from all mahogany flat-backed D-25s to spruce-topped arched back D-25s in the early 70s, there were some mahogany-topped arched back D-25s made. Don't know how many (Hans might know)... I have seen several (3-5) on eBay or on-line shops in 2 years of watching. As I recall, all have been from '73. All the '72s (and earlier) I recall seeing have been all 'hog flat-backed, while the '74s (and later) I recall (including mine) were spruce-topped arched back. '73s have been a mix. There was one mid-'70s "spruce-topped flat back D-25" on eBay more than a year ago that turned out to be a D-35 in disguise... it clearly had D-35 stamped inside on the neck block. Hans suggested that its spruce top got stained like a D-25 by mistake and it got mixed in with the D-25s, so the soundhole label was written as a D-25 (even tho the neck block said D-35).
It's easy to tell what the top is made of... just use a mirror and flashlight to look at the top thru the soundhole... it should be obvious if its mahogany or spruce by the color (you can usually tell by the grain pattern of the top, as well... the mahogany has much more stripey pattern that the stainied spruce tops). On my spruce top, the light spruce of the top clearly shows thru the worn spots around the soundhole.
What I can't quite figure is the cherry (CH) vs. mahogany (M) stain... perhaps it's just the pics, and side by side in person it would be obvious, but I can't see much difference between my D-25M and others pics of D-25CHs. Here's my '74 D-25M: