This is a Slingerland snare, model "Spitfire", size 5" by 14" with unlaquered brass shell. It is a 12-lugger and has a TDR-strainer, extended snare wires and steel sticksavers.
This original "Slingerland" shell was bought on ebay and then restored with original Slingerland hardware. This NOS shell was never laquered (see explanation below.)
In order to chrome-plate anything it needs to be plated in nickle and then copper first before the chrome plating can be adhered. This "Spitfire" shell never got chrome-plated.
Here is a video where I play my spitfire
... and here, my spitfire gallery.
Enjoy,
Fred