Early 30s Gibson L-4 or L-7

[wintermoon]

Thanks. I've been confusing ser. nos. with FONs.
On further investigation 2 sources date 91289 as a '33. Last of the '33 was serial 91400.
If the FON is the pencilled number 1106 (It could be 9011), I believe that would make it a '34.
From what I've read, if anything, the FON should date earlier than the ser. no. so this is a bit strange.

Keep in mind serial number ranges are approximate, 91400 isn't necessarily the exact last instrument made in '33.
Same w FON's, they can vary greatly w overlaps, duplicate #'s, and are sometimes all over the place.
Using a combination of serial #'s, FON's and an instruments features gives the closest approximation.
The previously mentioned Spahn book has updated many serial numbers/dates that Gibson company historian Julius Bellson compiled years ago.

[garybaldy]

Keep in mind serial number ranges are approximate, 91400 isn't necessarily the exact last instrument made in '33.
Same w FON's, they can vary greatly w overlaps, duplicate #'s, and are sometimes all over the place.
Using a combination of serial #'s, FON's and an instruments features gives the closest approximation.
The previously mentioned Spahn book has updated many serial numbers/dates that Gibson company historian Julius Bellson compiled years ago.

Thank you to you and TRM. I need to curb my OCPD!