A low print run

[Rachel Adams]

Hello.

What is the meaning of the part in bold?

If a stamp has a low print run, a popular picture or design, and is in an excellent condition, this stamp may be worth a lot of money.
From Reading Challenge by Casey Malarcher.

 

[Rachel Adams]

If something has a low print run, not many are printed.

What are they talking about? The numbers?

 

[Skrej]

Perhaps noun definition 5a #1 will help clarify what a print is in this context.

edit: See also noun definition #5 for 'run'.

 

[Charlie Bernstein]

What are they talking about? The numbers?

They're talking about how many stamps were printed. If only a small number of stamps were printed, stamp collectors will pay more to get them.