Issues prior to that have become highly collectible.

Nowadays genuine point blankets have become very collectible and could fetch prices up to thousands of dollars.

In painting, Thorsen painted a number of abstract works, which have become increasingly collectible.

He published numerous books on design, which have become highly collectible.

Today their 200,000 plus paintings have gathered significant interest and have become quite collectible.

Now that production has ceased, the dolls are becoming more and more collectible.

The 1986 "Master" in team issue neon green with all original components has become highly collectible.

Only 1,700 of these early models were made and have subsequently become highly collectible.

Promotional stamps were produced for this laundry business and became collectible.

In recent years Gillray's work has become very collectible.