Antique folding platform rocker - Any information would be helpful

I found this chair in the driveshed of our family farm.  We are the 4th Generation on the farm, my father in law & sister have no recollection of this chair, and there are no other living relatives.

I cannot find any markings/letters anywhere.  Wondering if anyone has any idea, where it may have come from, what year, and who may have made it. 

The pics aren't is great quality and I apologize for the yellowing.  I also hope the pics show up, as this is my first time posting.

Your help is appreciated!!
Caexis

See the end of this blog post for good reference books for these folding chairs.

Yours looks to be ca. 1880 and could possibly have been made by E. W. Vaill.  It shares some similar decorative elements to a chair in the VSA book on page 141, but not identical.

Disclaimer: I was the runner-up bidder on this c. 1880 E. W. Vaill folding chair salesman's sheet recently sold. In the interest of trying to help this individual and others identify folding chairs, I hope posting photos of this sheet does not cause problems. If it does, then removing it by the moderator is appropriate and I apologize. The image has been digitally enhanced for maximum resolution-again, it is being shared solely for information and identification purposes.

[moderator note by John: I photomerged the two into one image and re-uploaded.  Thanks for sharing]

Reply to moderator: Thank you very much for merging the two images into a single sheet image-much better! Caexis's folding chair does not appear among those featured on the E.W. Vaill product sheet, but perhaps someone else can use it to help identify their chair. Folding chairs were very popular in the last half of the 19th century and the Vaill product line shows some of the variety available at the time from just one company.

Thanks to those who have replied so far.  And some of the E.W. Vaill chairs do have the same qualities...I just can't find anything anywhere that is like my chair...I have found chairs that rock & fold...but not on a platform like mine.  The above image...was this a complete collection of his work??  Maybe it is a later piece, or perhaps an earlier piece that wasn't mas produced??

Again your help is appreciated.

Caexis

Quote from: Caexis
Thanks to those who have replied so far.  And some of the E.W. Vaill chairs do have the same qualities...I just can't find anything anywhere that is like my chair...I have found chairs that rock & fold...but not on a platform like mine.  The above image...was this a complete collection of his work??  Maybe it is a later piece, or perhaps an earlier piece that wasn't mas produced??
Again your help is appreciated.
Caexis

The E.W. Vaill product sheet only shows what was available at that specific time. It is certainly possible that your folding chair was made by the same company but at a different date. Please keep in mind, though, that there were likely dozens of manufacturers of folding chairs at the time when your example was made. Some published catalogs and product sheets while others probably didn't and these smaller firms may have supplied mainly to local furniture dealers. As seen here on Rare Victorian, the high-end pieces made by famous makers are often identified by labels, stamps, or stencils on the pieces themselves or from period documents from these makers. Once you get into the more mainstream pieces, identification becomes infinitely more difficult. As much as I dislike saying this, it may not be possible to make a positive identification. The folding chair you have does appear to be in the Americanized Eastlake style popular from the mid-1870's to around 1890. It also appears to be made of American black walnut whihch was very popular during this period. By 1890, walnut was severely over-cut forcing makers to rely more on Oak. This, in-turn, ushered in the age of Golden Oak which lasted until the early 20th century.