Blue 1 x 16 size piece

[b-ran]

I have this piece below that I got in a lot from Salvation Army.  It included a load of really vintage Lego and Duplo pieces.  This piece I cannot identify.  It is 16 studs long, and is jagged on the top like this rip cord piece http://www.bricklink.com/catalogItem.asp?P=11126

 

I cannot find anything similar on Bricklink or Peeron, and not sure even how to search other than the length as I can't appropriately describe the top of the piece.  The second photo is just to show it is a Lego piece

 

(Edit: I should also mention there is no part number on the piece.)

 

[TheOrcKing]

It is one of the earliest train track pieces Lego used when they introduced Trains to their lineup back in the day. There is the one with 'teeth' same as yours here I believe while another is completely smooth. There are a couple different versions which only add to the frustration of narrowing it down perfectly but I do know it is from the original Lego train sets simply for being the color blue and was used up until the late 70s.

[Jojoyojimbi]

it looks like this piece:  http://www.bricklink.com/catalogItem.asp?P=2428

 

but it's a weird color

[b-ran]

It is one of the earliest train track pieces Lego used when they introduced Trains to their lineup back in the day. There is the one with 'teeth' same as yours here I believe while another is completely smooth.

This helps a lot, thank you! Thought I had searched all 16L and 1 x 16 on BL, but I must have missed it.

[TheOrcKing]

This helps a lot, thank you! Thought I had searched all 16L and 1 x 16 on BL, but I must have missed it.

Always happy to help.

[BearCrash]

A grey version of this piece is also used for the monorail in this set: http://www.brickpicker.com/bpms/set.cfm?set=6970-1

I still have this set somewhere in my parents' attic.

 

Edit: Upon closer inspection, it seems that the 6970 set uses smooth pieces rather than toothed ones. Oh well, this brought back memories from when I was 4 years old which is pretty cool.