Jessica,
That's a beautiful refrigerator! Definitely a 1955 - due to the colors of the interior (yellow and blue - unique to 1955), and mechanical latch on the doors (magnetic doors were introduced in 1956).
Good luck with the search for the parts. You might try reaching out to John Jowers at antiqueappliances.com and see if he might have spares of the parts you need, and that he would be willing to sell.
lawrence