I've noticed that in recent years, there's a style of poster that's becoming fairly common which seems to be referred to as a 'mini sheet'. Most are around 11 x 17 inches, but some are as large as 13.5 x 20. As a daybill collector, a poster that's 13.5 x 20 is pretty close to what the last 'official' daybills measured up as.
Has anyone had much to do with these? Or do most people consider them promo flyers rather than a legit poster?
An example of a 'near daybill' size 'mini sheet' (13.5" x 20"):