Newfoundland 245 And 254

Left: Newfoundland Scott/Unitrade 245 (1938), comb perforated 13.5, Sprague (Perkins Bacon) printing.
Right: Newfoundland Scott/Unitrade 254 (1941), line perforated 12.5, Waterlow printing.
It is interesting that both stamps have a very similar width of <20.5 mm.
However, the catalogues state that Waterlow printings are 21 mm wide.

My 2006 SG Commonwealth 1840-1952 describes it this way:


What catalog are you using? Scott? Unitrade? Other?

Don't worry about dimensions. Just look at the "L" in Newfoundland.

The bottom of the design on the right stamp (Waterlow) pictured above is distinctly wider than the left stamp. Assuming that the two stamps were scanned together in one scan, they can't measure the same?

There are lots of engraving differences but for big features, the Waterlows have the subdued L, leaning 2s and taller POSTAGEs. Hopefully, a cancel can't obscure all of those quick spotting features.

Comparison of Scott/Unitrade 255 (21 mm), 245 (20.4 mm), and 254 (20.4 mm) horizontal widths.

And the front of the hair, bottom of ear (lobe), crown band jewels, eye lines and on and on.....

20.5 is 97.6% of 21.

Measuring the bottom of the designs in the first image, the left stamp, Perkins Bacon, is 478 pixels wide and the right stamp, Waterlow, is 489 pixels wide. Approximately.

478 is 97.7% of 489.

Pretty close to what the catalogue says we should expect?

According to the NSSC 2024 Catalog pg 259

Perkins Bacon & Co. printed stamps exist in both smaller 20.5 mm and larger 21 mm design width sizes.


Your bottom green stamp(254)is also slightly wider the the middle green stamp(245) by about .5mm

The NFLD 254 had 10 printings, the so called Blitz printing (May 1941-Feb 1942) was 21mm and perfed 12.5

It is mentioned in the BNA Topics, Volume 80, Number 1, January–March 2023 pg 26 about printing sizes



Trodent

Scott/Unitrade 254 vs Scott/Unitrade 255

Scott/Unitrade 254 vs Scott/Unitrade 255 vs Scott/Unitrade 264

I failed to find the difference in the above scans. What should I have seen?

@Rob Roy,

Look at the corner perforations. The green stamp has comb perforation. You see round corner perforations, as the comb has no interfering perforations.

The red stamp has what looks like a point in the corner perforations where the horizontal and vertical perforators punched out overlapping holes. You also see 'strange' perforation shapes as if the tips are extended at the bottom corners of the red stamp. That is something you see with line perforation as the two directions of perforation may not line up where they cross.

I guess I need to practice. In the original scans, there's only one round corner, the right upper corner of the right-hand stamp. All other corners look the same to me, like a split.

Comb perf........Line perf
A comb perf will always show a "dent" in each of the 4 corners

From your example, Rod, if the left image is the comb perf, there should always be a hole at the corners, so in the OP's scan, the upper right corner of the right-hand stamp is sufficient proof that it's a line perf?
Can there be comb perf when there are different horizontal and vertical perf?

It's all about the short-side (horizontal or vertical) outer frame widths of the stamps. Most catalogues state that this is 21 mm for all of the Waterlow printed Newfoundland (2nd) Resources Issue (1941-1949) stamps. However, Scott/Unitrade 254 appears to be an exception (<20.5 mm). Also, see the following: http://goscf.com/t/82457