Question on original GN Floor mats

[Rich Gio]

Guys, Can anyone tell me what type of backing the original REAR Floor mats that came with the car had? Is it the "ribbed" type or the little nubs? Also, did the originals have a part number on the back like the fronts did? I recently bought a set from a board member that I'm not sure are "original" as he stated. Pictures would be great!​

 

[1KWIKV6]

Rich , if you find out that those are not original GM mats I'll take them back and refund ALL your shipping costs both ways. Those were in my car since new , till I purchased new mats a few years ago . But , please let me know what you find out. Like you I'm the original owner and lotsa time has passed since I bought this at the end of '86 .
Dave

 

[Rich Gio]

Dave, I appreciate that. Just thought that the originals had a GM part number on the back. I'll let you know. It's cool.