UK, H2B1(P) Variant

I was attracted to the postcard shown here primarily because the handstamp in the illustration on eBay appeared to be narrower than that shown in Torrance and Morenweiser. Caveat: eBay illustrations do not always maintain the proportions of the original items.
I did also note, however, that the "P" in this handstamp is in a different font than that shown for H2B1(P) on T&M page 91. And, on closer inspection, the stop after 'P" appears to be a square rather than a circle.
At 5 points, H2B1(P) handstamps are among the more common of he UK WWII censor handstamps. Perhaps those of you who specialize in this area can take a look to see if there are any patterns involving typefaces and stops among your examples of this handstamp.