Ai Li-Shan
The 10c
The first issue was roulette perforation, which caused difficulty in separating the stamps. See figure 1 of a strip used on document dated November 3, 1958. Consequently, it was privately (sewing machine perforations) perforated. See figure 2 of a block with the roulette and sewing machine perforations. It might be worth noting that sewing machine perforations is a matter of punching a hole, not removing the chaff. This of course results in a rough perforation when the stamps are separated.

Figure 1

Figure
2
The first printing was on plain paper. The plate layout consisted of an interesting variety (perhaps a secret mark) which is found on all stamps of the 1st and 6th vertical rows, or a total of 20 copies per sheet. See figure 3 of the line that extends from roof top to the right peak. (left stamp in the pair). Figure 4 is a close up of this variety.

Figure 3

Figure 4
Here is the summary of the examples found for the first issue (also probably some additional printing before a change in the die). This assumption is based on the rather worn die.
March 1959 Imperforate plain paper
a. Roulette and perforated by sewing machine
b. Roulette and perforated 12.5
c. Roulette and perforated 12.5 x 13
Sometimes the roulette perforations are rather faint. Please be aware when buying any imperforated pairs, examine them very carefully. To my knowledge there has not been found imperforate between pairs.
Please refer to figure 5, you will note a vertical line between the Chinese character “Tai” and “Sin”. This is found on the first printing as well as all others to some degree. Mr. Wu mentioned a printing without the vertical line, this will be discussed later. Please bear in mind that especially on the first printing, due to plate wear, sometimes the vertical line is reduced to a dot.

Figure 5
The second issue
is reported by Mr. Wu to have been issued in 1959. This is also on plain paper. However, an entirely new printing plate was
prepared. Mr. Wu stated that both issues
were printed by the Chinese Printing and Engraving Works (in Sintien, a suburb
of
The stamps from the plate are easily identified with the letter “H” between the characters “Tai” and “Sin,
figure 6.

Figure
6
The changes to plate is especially noticeable in the top row of characters, the left characters all protrude above the line in all printings except the “H” plate. Figure 7 and 8 reflect this difference. ((also, the 1st and 6th vertical rows DO NOT line from the roof peak to the tip. All the other printings have the line.

Figure
7 All printings except the “H” plate

Figure 8 Only
the “H” plate
Second printing Plain Paper, “H” between “Tai” and “Sin”
The earliest example on document was August 1962.
Perforation 12.5
After the issue of the “H” stamp, the printer reverted back to the original plates (with the line mark in the vertical columns) Granite paper came into use as early as September 1965. This probably should not be considered separate since there no doubt was a number of printings. However, for simplicity, I will group all of them as follows:
Third printings all on Granite paper, vertical line between “Tai and “Sin”, however in many cases it may be faint. The line on roof is found in on these issues in the vertical rows 1 and 6.
1965 September? (probably earlier) granite paper
a. Perforation 11
b. Perforation 12.5
c. Perforation 12.5 x 13
The last issue is rather interesting in that it is a very clear plate, no wear at all. It is also found with the distinctive color of grey blue. When we discuss the Kinmen overprints, the last overprint was found on this stamp. Mr. Wu identifies this as the printing without the vertical line.
Early 1970s, grey blue, very clear design, granite paper.
Perforation 12.5 x 13
KINMEN OVERPRINTS
This issue had a total of four different overprints, restricting the usage to Kinmen and area. The dates noted are those of Mr. Wu. The few that I have on document do not conflict with his dating. Since the overprints will not be clear against the background, suggest you go to the website.
Kinmen overprint 1 1956 Basic stamp roulette issue, plain paper. (I have not seen any of the private perforations on this issue. The overprint layouts are as follows:
X X X X X X X X X X X
X X X X X X X X X X X X X
Roulett 2nd Issue “H” 3rd Issue 4th Issue No Vert Line
1956 1964 1967 1972
Figure 9 Figure 10 Figure 11 Figure 12

Figure 9

Figure
10

Figure
11

Figure 12
References:
Bendig, A. W. Revenue
Stamps of
Wu, Shgeau Horng, Revenue Stamps of