There's a DE63 S-92 on gunbroker.com... non matching scarce early K Date (1934) mag... right side receiver stamps look kind of light/soft to me. Your rig with matching mags has more value obviously.
http://www.gunbroker.com/Auction/Vie...Item=185060424
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I'm looking for a D suffix DE154 G Date mag. The closer to #457d the better 
PM me if you have one you are willing to sell, trade, or if you have a lead
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