The bisect stamps can only be collected on a whole cover or on piece with the postmark. This table had an index of 306 items compiled for the study. This readily demonstrates that the St.Thomas post office udsed 80 percent of the total with the two
post offices on St.Croix using about 10 percent each.
Post Office On-Piece Envelopes Total items
75 167 242 (79,8%)
23 28 (9,2%)
28 36 (11,85)
Three items had four-ring St.Thomas arrival cancel used on letters without a postmark.
So the four-ring cancel is the rarest cancel on bisected stamps - excluding the single known St.Jan cover.
The 242 St.Thomas items can be subdivided as follows:
Domestic envelopes and one postcard:
221 items (93%)
Foreign printed matter: 5 items (2%)
16 items (5)
These data make it possoble to assign relative scarcity values to infrequently seen items.
It should be mentioned that any of the postcards or printed matter items listed above had stamps from printing two.
The tabulation has two surprises. First , whole covers are significantly more plentiful than stamps on piece, but all stamps catalogs
agree on assigning a greater catalog value to the covers.
The second surprice was how few inverted frames (eight items) were indexed. All prior publications agree that the most commenly used stamps were from printing four that had 11 inverted frames
in positions 51 and 91-100.
Printing three had a single inverted frame in position 51. After discounting the use of printing two stamps, the inverted frame count should have been closer to 20. One possible answar is that the cancel obscured the identification
scroll in the upper right and lower left corners. A whole stamp has both corner scrolls, but the bisecgted stamp only has one coner available for identification. It should be mentioned that the inverted frame was not described intil 1917.