Metal tag found attached to rear of upper back seat

[Matt13]

While I didn't find a build sheet, I did find this strange thin aluminum (at least I think it is ) tag. It was attached to the spring support on the rear upper back seat. What is it? What do the codes mean?
  reads; 2942656 B
      LSI - M - 13685 0412

[headejm]

I believe that is a tag that came with the seat and identifies it with the seat's part number and probably the manufacturer's code and date stamp.

[6bblgt]

2942656 B = part #
LSI - M - = manufacturer
13685 = vendor code
0412 = date 041st day of 1972 = Thursday 2/10/72

[Matt13]

So much stuff on my car was built early in 72; weird for a 73!

[7E-Bodies]

Here's the one from my (November 69) 1970 Challenger. Thanks for the date code pointer, @6bblgt !