Last Friday, during a visit to Glasgow (primarily for a spot of external examining at the International Christian College), I managed a quick visit to the twelfth floor of the University Library to take a look at Glasgow MS Gen 1026/13 (a.k.a. P. Oxy 1228; a.k.a. P22).
It is important as being one of very few early NT mss written in roll format (rather than codex). The larger piece has a rather badly preserved text for the most part, so I shall have to return next year for a closer look at the blanks!
Here are some pictures (Glasgow University Library has images of all their Oxyrhycnhus Papyri available here).