Yes Alan it is, what a good looking machine it is.
Crocker first made single cylinder speedway bikes but started making 'V' twins in 1936. Crockers were manufactured to order, with the 91+ cubic inch engine (about 1,491 cc) being the largest capacity production motorcycle of the time.
They out horse powered 'Indian' and 'Harley' machines by a good 10-20HP.
Quite a considerable difference especially in those days.
During the war Indian and Harley Davidson got military contracts to produce motorcycles, Crocker got a contract with 'Douglas' to produce aircraft parts, which proved to be more lucrative than making motorcycles.
The last one being made in 1942, making them one of the rarest machines, I think only a hundred were made, of which there are still about 60 in ownership.
If you should be lucky to find one in a barn or in a junk shop?? expect to get around and over a quarter a million US dollars for it!
If you are interested in owning one, you can. In 1999 a new corporation was formed to manufacture replica parts, and now produces complete Crockers in kit form, following the original specifications. They are only $53,000 (£41,500) but you only get the 1000cc engine.