The scan is flawed. The scan begins with p. 11, meaning that numbers 1 and 2 are lacking. The scan appears to be complete for the remainder of the run (nos. 3-38), however.
Identification of the shelfmark is conjectural, but Oxford's OLIS catalogue lists only one copy of The Scrutator that is complete: other copies at the Bodleian are said lack numbers included in this scan.