Sunday, July 26, 2009

Comparisons of the 15cMG-SO 'TINA'

These comparisons show several types of overprints for the 'TINA' plate variety. The slight differences between the placements of the overprint are an indication that this variety is found more than once on the plate.

15c Martin Guemes 2C 'Fat I in TINA of ARGENTINA'

Here is a selection of 15cMG2C-SO blocks with the 'Tina' plate variety.

Upper Left 'Tina'

Upper Right 'Tina'

Lower Left 'Tina'

Lower Right 'Tina'

15c Martin Guemes 1L 'Fat I in TINA of ARGENTINA'

This variety, by how commonly I find it, is most likely a master die plate variety. I always find the 'Tina' plate variety with a stamp to the right with a small gap on the inner line next to the last A of ARGENTINA. Except for what seems to be an early printing, represented by the first block I show here, I also find a similar 'gap' plate flaw on the stamp below the 'TINA' stamp.

'Tina' Plate Variety Upper Left

Upper Left stamp

Upper Right stamp

Lower Left stamp

'Tina' Plate Variety Upper Right

Upper Right stamp

Lower Right stamp

15c Martin Guemes 'break under first A of ARGENTINA'

These two blocks have this plate variety. By its scarcity I postulate that it is not common on the plate, although when I compare the overprints from each block and the additional flaws on the second block, I find that these are two separate plate positions.

Here is a detail of this flaw:

The upper left stamp in the following block is the plate variety.

The upper right stamp in the following block is the plate variety.

Here are the comparisons of the plate flaws and the relative distance between the overprints.

Focusing on the L of OFICIAL in the overprint we can see that these are different types of the overprint for the same flaw and same positions relative to the flaw.

Saturday, July 18, 2009

10c Rivadavia Red Types II and III in two blocks

Here are two blocks labeled for types (2 is II, 3 is III). I do not find any plate flaws that connect these two blocks.

'two dots' 10c Rivadavia Red Type III plate variety

The two dots are found under the letters RN of BERN in BERNARDINO.

I find two specimens with this plate variety, recently reported by Rein. The two I find are different positions in the plate, as are the two from the position immeditely right of this plate variety. Here are comparisons of the 'two dots' specimens;

and of the position to the right of the two examples on hand:

Here is the strip of three with the first example.

Left-most stamp

Middle stamp, 'two dots' (shown at top)

Right-most stamp

top detail of the right-most stamp

bottom detail of the right-most stamp

The second specimen is found top left in this block.

Top left, 'two dots' plate variety

Block labeled for types (2 is II, 3 is III):

Relative numbers of the three types of 10c Rivadavia Red

I have selected a group of clean used stamps to look for types. I chose multiples of three or more as a first step to figure out where the Type III's are on the plate.

I found the blocks listed in this table from a selection of approximately 5,000 stamps. Because this stamp was used mostly as a single and sometimes as a pair, multiples are relatively uncommon.

The relative rarity of the Type I I already knew about. I would use a larger sample, including singles, to measure it with higher accuracy, but 1 in 20 of Type I compared to the sum of Types II and III seems realistic.

From these blocks an 82.5 percent / 17.5 percent split between Types II and III results. From the stamps with selvages I have, I only find type IIIs for the selvage with the vertical field of lines.

Comparison of the 10c Rivadavia Red Type II and Type III

I am in the process of absorbing a significant discovery that Rein has just made: there are additional types of the 10c Rivadavia Red and Brown stamps! This is a most interesting development.

For the typographed stamps with the selvage with a field of vertical lines I find two types. Because we already have a type I and a type II for the red Rivadavia, I am calling it type III. From looking at a small sample, I do not find any multiples with both types, and if this continues to be the case, then each of type II and type III are from separate compositions.

Type II

Type III

Comparison of Type II and Type III

There may be several master die varieties of Type III. All type II seem to share the two dots under the B of BERNARDINO, and all type III seem to share the dot in the lapel .

I find both types used in 1936.