Probably not super great, but for $12.50 plus postage, it's worth the risk. Unless you drive your Model A in the "Outback" through shrubs, sandstorms, poisonous snakes and kangaroos, the chrome tape should look good for quite a while driving in city traffic. I took pictures of one car I did a few years for a local car company, but I apparently deleted the files after the car was sold. The tape turned out quite nicely. From a few feet away - and unless you knew the story behind the story - you wouldn't guess that chrome tape was taking the place of chrome plating. A few blemishes underneath marred a perfectly smooth surface, but the bumpers still looked more than presentable versus silver spray paint.
The best thing I can recommend to someone putting this tape on Model A bumper bars is to make the bar's surface as smooth and defect-free as you can so that the tape will have an unblemished appearance. If you leave deep rust pitting in the metal, tape being tape, it will indent into those pits and ruin the smooth look.
Synchro909 - If you go this route, order three or four rolls so that as one application begins to show its age, simply peel it off and open the second roll for application. 'Gotta be cheaper postagewise ordering a few rolls at a time than one at a time as needed. Also, maybe have a couple rolls on hand for others in your club.
Marshall