1950s-70s. I suspect this mold predates the very common bicentennial examples
If you dig through this list of images, you will find a few like yours
https://www.google.com/search?q=amber+log+cabin+syrup+bottle&rlz=1C1CHBF_enUS811US811&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjO96v-r4_sAhXbl3IEHWplCnwQ_AUoAnoECAwQBA&biw=1678&bih=927