If it is English Rogers it is a very rare drum. There are very few wood shell snares with BT lugs. I have only seen two. This is mine.
[IMG]http://i207.photobucket.com/albums/bb77/nutbox/DSCN2865.jpg[/IMG]
Note the tall hoops used right to the end of production and the sharper "ears" on the hoops. The rods are square at the ends (no shoulder). Black was not a catalogue wrap for ERs. If it is ER there will be two small holes for the logo.
[IMG]http://i207.photobucket.com/albums/bb77/nutbox/DSCN2867.jpg[/IMG]
The damper would look like this. (Different drum)
[IMG]http://i207.photobucket.com/albums/bb77/nutbox/DSCN1608.jpg[/IMG]
Most snares are beech (like this one).
If it is ER then looks like there have been mods.