ANTIQUE CAMERA--WHAT TYPE?

I WAS ATTRACTED TO THIS BECAUSE IT DID NOT SEEM LIKE A "NORMAL" VINTAGE CAMERA.....THE ROUND PART IS INTRIGUING AS WELL AS THE ADJUSTMENT TRACK AND TRIPOD MOUNT..THE ORIGINAL MAKERS TAG IS ALL BUT DUST,IT HAS A 5X7 PLATE AND A RED FILTER.... WOULD LOVE TO KNOW MORE..