Into the Deep Blue
The non Chalon Head "Victorias" of 1879-1909 are rather challenging, with differences in design, watermark, Perf, and thin/thick paper.
With this post, we will concentrate on the first 1879-81 issue, which is quite complicated in itself, despite the issue only consisting of five denominations.
Although it is true that the script (Queensland) is smaller than the later issues, the best way I found to quickly determine a 1879-81 stamp is to look at the four corners of the stamp. In a word, the corners are "plain" with only vertical brush marks found - nothing else.
Then there is the matter of which catalogue to use: Scott vs Stanley Gibbons (SG). Frankly the SG is far superior.
For example, the SG illustrates Wmk 5 (one pence, two pence) and Wmk 6 (One, Two, Four, Six Pence & One Shilling). Note Wmk 5 has the upper crown as a small middle "v", while Wmk 5 has three equal oval sections.
Unfortunately Scott only shows Wmk 68, with a note that there are minor differences in watermarks. Scott Wmk 68 is the equivalent of SG Wmk 6, with no illustration of Wmk 5.
The one pence and two pence stamp can be found with Wmk 5 (SG 128-133) with much higher CVs ($50-$200) than the Wmk 6 (Scott Wmk 68) One or Two Pence stamps. Alas, I checked all my stamps for watermark, and they were Wmk 6 (Scott Wmk 68) in my case.
And SG has many more catalogue choices for colors. For that reason, I will illustrate the stamps here with SG colors for the most part.
Finally, SG illustrates the two Dies found for the One and the Two Pence, while Scott only mentions them without providing any detail
This shows a close-up of Die I. Die I CV here is $10.
This is a Die II stamp.
As it turns out, I happen to have more Die II stamps than Die I. The CV is usually similar. Here CV $10.
A nice color description for this stamp. CV is ~$15.
The reddish brown description is not in Scott. CV ~$15.
Scott and SG agree on color here. CV $5,
I also have a Die I copy of this color. CV $5.
CV $60.
The "yellow green" color found in both catalogues. CV $8.
A nice "deep green" color. CV $8.
CV $14. There is also a pale lilac color (CV $15).