String theory

Could someone somewhere tell me a date and possibly a price 4 myold typewriter it is made by imperial co.ltd in leicester england with coat of arms on front and under this coat of arms is the words by appointment to H.M King George V underneath on oneside is numbers 352940X and on the other side is a triangle of sorts with the numbers 428 inside HELP PLEASE

The hell, dude? Ebay discussion forums would be the place for that, not an ASTRONOMY website.