I have recently picked up a 70's (?) Slingerland Aluminum Snare Drum, the 8 lug, ribbed shell style version. Upon closer inspection, the drum appears to have a seam that I guess was not a factory original - which is where I need your guys help.
I have listed some images for you to see what I mean, but the seam is what I would desribe as 'agricultural' and not what I would expect from a manufacturer such as Slingerland. The top and bottom edges do not match up on a flat level and can easily be seen to be out on the images. There is also a reinforcing plate inside the drum where the seam is. You can also see daylight through the seam so it is not particularly well finished.
Another thing that leads me to believe this isn't the original finishing of the drum is that the seam is hidden by a lug, near the air vent / badge of the drum, rather than round the back, out of the way. Surely Slingerland wouldn't do this would they?
The images:
http://i795.photobucket.com/albums/yy234/weeman1973/cf9f0fe4.jpg
http://i795.photobucket.com/albums/yy234/weeman1973/abc9b326.jpg
If anybody can confirm my theory that this drum has been altered / amended outside of the factory or indeed confirm that Slingerland did allow their drums to leave the factory this way I would be truly grateful as at the minute, I am not convinced either way!