Pyrex dishware is always a great score at the thrift store. However, this rare pattern from an early collection is worth thousands as only a few were ever made.

I’ve been seeing so many patterns trending lately — from block print florals and polka dots to tiger stripes and tartans. But ...

Each pattern was issued in a color-printed envelope suitable for mailing, with the pattern number, title, price, copyright date, and an image of the finished product printed on the envelope.