I recently purchased what seems to be a very old hand crank Silvertone portable phonograph. It works beautifully, has a speed adjustment screw, record compartment, hand crank, and extra needles in a holding compartment with a spring loaded lid. I have searched and searched the internet hoping to find out just how old it is and am having no luck. If you can give me any info or point me in the right direction it would certainly be appreciated!