Cracker Jack Oh Henry LOWNEY'S Caravan Milk Chocolate Ruler CANDY ANTIQUE sign!!

Description

12" x 1 1/2" tall.  It has metal inside and weighs in total less than 2 ounces.  It is sturdy with the thin metal inside so seems made to last and be used and show advertising for years.  Great saved item with only minor age showing with some light spots and rubs.  I believe this to be celluloid over metal which is then folded.  I suspect this to be pretty old based on the font and use of LOWNEY'S with Oh Henry and Cracker Jack.  I could not find another anywhere.  See detail photos.
I have to guess age on this rare piece and I believe it to be 1920-1940 just based on look and knowing Oh Henry started in 1920.  If you have information to help me and others with this piece I would appreciate any input.  Thanks!  I don't know how to value this other than my experience tells me it is good so I am hoping a few of you will appreciate and bid strongly to get this.  Cheers and good luck!!
King of CANDYLAND
NUT MILK CHOCOLATE, Delicious candy bar, Cracker Jack Popcorn a prize in every package
See title, description, and photos and let me know if any questions.  Thanks.  Stay healthy and best to you during these times.
Keep checking my auctions as I will continue to put on nice coffee cans, beer cans, and tins!
Cheers and good luck!!  If you have questions or need any more photos I am glad to provide you with what you need to bid accordingly.  YES - I GLADLY COMBINE SHIPPING TO SAVE YOU $.  I leave you positive feedback right when you pay as I don't wait till you do (why not!  you've done your part as buyer!).  After you receive your item/s and are pleased positive feedback is great and if not completely satisfied please contact me.  I want us both to be happy with all transactions.
I try to ship at reasonable cost so for some large items that may mean using fedex post and taking a week but I mostly use USPS first class/priority depending on value/weight.  I use good packing materials and take care of items as I am a collector first and know how I want to receive my items
All items are sold as-is as found. Returns will only be accepted if we have grossly misrepresented the item in the description.  So far this has worked out well as I sell many kinds of hard to find items and most of you know what you are looking for and will ask questions in advance and bid appropriately.  So far no negative feedback so I will do my best to continue that.  :)
Hi buyers.  I am pleased you have found an auction or buy it now or looking at my eBay Store.  Please know that I am a collector and sell things I find and for a few friends and all items I have in my possession and I touch and review and list and ship as best that I can.  When you have a question, I gladly respond and answer it personally.  I do all my own listing and shipping.  You are not just a buyer to me, you are a valued client and I try to give you a friendly experience, and it is my belief that it is imperative I do everything in my power to make your experience the best possible.