old briggs engine, carb inquiry

I acquired an old early 60's era W.S. Darley Company pump which is powered by a Briggs and Stratton model 23AFB engine. This piece of equipment has been sitting neglected for a long long time but apparently wasn't "all that long ago" when it did in fact operate okay. I'm gradually looking it over, checking things out, seeing what I might do to clean it up and hopefully get it running. Here's a picture of it sitting on the work table where I've been looking it over, with a few components removed, including the carb. The next picture is of the carb itself. I have the specific engine info, the type, the serial number, etc. But the carb itself doesn't seem to have any label or stamp indicating its make; but I assume its a Briggs and Stratton but don't know for sure. I'm in the process of gathering/researching anything about the pump and engine (and carb) I can find out. I'm thinking doing some disassembly of the carb next, just to check out the inside condition to the extent I might be able to. Before I do that though, I'd like t at least get a clue on what make of carb this is, what model, etc so I could look into the possibility of acquiring parts for it if necessary. Anybody here seen a carb like this before, maybe help me with identification? Thanks. Image: http://i207.photobucket.com/albums/bb153/sgull1/IMG_2690_zpsec1cb625.jpg (http://s207.photobucket.com/user/sgull1/media/IMG_2690_zpsec1cb625.jpg.html) Image: http://i207.photobucket.com/albums/bb153/sgull1/IMG_2691_zps165c5711.jpg (http://s207.photobucket.com/user/sgull1/media/IMG_2691_zps165c5711.jpg.html)