Here we have another Slingerland Snare for sale:
5.5" x 14" Chrome-O-Brass Concert Snare
Sr.Nr.: 175297
Dates from around the 1970s
Excellent condition as you can see in the pictures.
The drum has a parallel type strainer that's adjustable both vertically and horizontally. It looks like Slingerland used a pair of 3-point strainers & connected then with an internal link (rod).
Selling this amazing Snare Drum for around the 650$ mark including shipping from Germany to the USA.
Drop a line if you're interested.
Many Thanks.
Pictures:
http://cl.ly/image/06453L2d3r08