[perezfan]

I've had dozens of these pennants framed this way for 20+ years, with no issues whatsoever. I have yet to remove one with a single problem or even a hint of damage. The 3 biggest "enemies" to pennants (IMO) are light, dust, and moths/insects. If you have them framed and kept away from direct light, you are averting all 3.

Of course, if you can afford archival materials and professional framing for each pennant, that's the best option. Also, these affordable pre-made frames can have the glass replaced with UV or Conservation Glass (if so desired). But in many cases, the cost of professional framing would exceed the value of the pennant. Seems silly to me...

Also, I have received Pennants from major auction houses that are purported to be museum-quality framed. This includes a recent acquisition from a very high-profile collection... only to find that they've been taped, stitched or glued to the backing- doing significant and irreparable damage to the felt. Having the pennant gently pressed against a pane of glass has been far less damaging in my experience.

Also... when these pennants are found in attics, estate sales, old closets, etc.... they aren't ever archivally preserved. Yet many somehow manage to survive a century or more in great shape. Just wanted to present an alternative, more affordable viewpoint.