That should be about 1927 and the case colors, at least in these somewhat dark pics, look legit. Lots of LC examples in the Case Colors PictureTrail http://www.picturetrail.com/gallery/view?p=999&gid=12588446&uid=6511424
Here's a like new .410 at CSMC for comparison
http://www.connecticutshotgun.com/guns/9057.htm