Pulled out my mags. and see they are Mec-gar (made in Italy) mags. not S&W factory mags as thought. They are blued, stamped steel, 15 round cap. as new with no packaging. Would trade these to you - my two mags for your 3913 SS mag. no additional cash required - if you are interested.
Sorry for the confusion, I should have looked at them prior to my first post.
Sent you a PM - check your box.
PM me with your address Jeff - I'll mail out the mags on Monday for you.
Pete