two near-identical re-printings both 9/1963, same unattributed cover art;
new cat# F2637 (may be distinguishing merkin & canadadian-printed book carcasses sharing merkin-printed covers, but this is not known);
fourth printing cat# & date not yet seen/seen reported,
all of the above sharing the same cover art, all 186 (183 numbered) pages.
(by) fourteenth printing, N8098, bears new, as-yet still-unidentified cover art, design, cover price 95¢
fifteenth printing retains this cover art & design, cover price now $1.25
sixteenth printing adopts sbn9/isbn10, (0)553103903 new cover art, design, cover price $1.75, 6/1977
seventeenth printing 0553204262, new cover art and design, cover price $2.25, 9/1981, indica includes string of printing numbers absent numbers 1 through 16.
all still 186 (183 numbered) pages
numbers (low thousands?) of some printings imported by transworld publishers, stamped with uk price on their front covers, and distributed in the yuk-of-gb-&-ni (and probably some countries in western yeurrp as well as gibraltar, and possibly also malta and cyprus).
this is a chimaera, conflating one printing's cat# with a different printing's cover price.
the original poster does not include enough information to identify which printing was intended and was probably entered, book unseen, from inaccurate information on e.g. worldcat (or similar). (this comment is from another edition of this book)