Matt,
That's a good looking piece of wall art..congratulations.
I needed some parts to complete a small O-Gauge passenger car. I called a dear friend in Florida to see if he had any. He had just the part. He said that he would mail the half dozen parts to me. I didn't think about it any longer. The parts arrived in a priority mailer. Inside the USPS mailer was a like new Parts Envelope from Madison Hardware that had my parts..