Made by Grah & Plumacher in Solingen, germany. Great razors, but not often found in the condition yours is in - most I have seen have severe to moderate wear towards the toe. The company appears in the Solingen records between 1939 and 1983. Most of the Gotta razors I have seen (30 or more) are extra hollow ground, giving a very thin blade which probably promotes toe wear. These exra hollow ground blades shave extremely well, but require greater dexterity in use, as the blade is vey easily deformed near the cutting edge - it contours itself to the face, but if you are not used to this style you can amass a lot of "weepers" during shaving. You can test yours when you get it - if the blade deforms with the pressure of a fingernail, it is extra hollow gound. A further pointer is the etching on the blade - the extra hollow ground style is often denoted "Hamburg Ring." The real reason for the Hamburg ring name is obscure, but most people tend to agree that the blade can be plucked like the string of a musical instument and give off a ringing tone. Who knows.
Yours looks good from the pics, but before use do yourself a favour and get a loupe of between 20x and 30x and examine the edge. Any nicks, knocks, deformations etc will produce a very uncomfortable shave.
It is by no means fit for the bin - they are a classic solingen make and if in good condition make fine shavers.
Regards,
Neil