Stamp collections

Hi,

We have said that expensive items which one does not normally handle are "muktzeh machmat chisaron kis" and may not be handled on Shabbat.

However: One who has previously designated such an item for a use which is permitted on Shabbat may handle it on Shabbat. For example: Stamps kept in a stamp collection may be viewed in their album on Shabbat, assuming one normally looks through the album without concern for damaging its contents. [The stamp is also not viewed as potential 'currency' because its placement in the album identifies it as not-for-circulation.]

(Shemirat Shabbat K'Hilchatah 20:23)

Have a great day,
Mordechai