Your watch is from about 1951 by this chart:
http://www.qualitytyme.net/pages/numbers.html
Since it is an Oyster, the crown does not pull out until it is unscrewed from the case tube (a patented method for water resistance, along with the screw-down case back -- this is a Rolex after all!). Be gentle, and you'll get the hang of it. It will need to be serviced if not done recently to your knowledge.
Post a picture if you can upload one to a server such as Photobucket. The honeycomb dial you describe is
echt-50s.