12 x 27" Cylinder & Jar Lid should be easy enough to find, BUT the Stamped Steel Bonnet will be the Hardest to find. Repop that is sold by vendors is nothing more than a Large Salad/Punch/Mixing Bowl you can buy from any large Restaurant/Hotel Supply & add a Globe Ring.
Here is an image on Jack Sim's Web Site;http://petrolianacollectibles.com/cv%20205.htm
Look at your Cyl. base casting to see if it had Cyl. Rods & get the correct Jar lid.