printing Close
With regard to the type Sower stamps, two letterpress printing modes were used:
- flatbed printing
- the presses
latter, more modern only appeared in 1922, and gradually take the place technique previously used for lack of anything better, since 1903.
He obviously existed long transition period during which the two techniques were used at the same time period mainly occupied by our favorite stamps, which makes them so interesting.
Indeed, Technical change involved an adaptation of the material, and creating new tools for print, very often the cause of the different known types for a single stamp: the differences are sometimes only visible under the microscope, and doing all the charm of these stamps.
's passion for many collectors stamps in current use, as for the type Sower, can not exist without the extraordinary diversity that characterizes them: the record back to 25 cents blue will be up to seven distinct types ! And it's not a coincidence that the sower the most collected.
To each technique, flat or rotary, the various presentations known meet:
- leaves sales "normal"
- the notebooks and sheets prepared for
books - the tapes and sheets " casters "
It starts to get complicated ... and it is not finished: it promises! ...
Knowledge of these technical requirements and the different possible presentations of the same stamp, can easily discover beautiful collector coins, or even exceptional items, to the detriment those who ignore them (which is still the case for many merchants and / or collectors!).
It can even do without a magnifying glass, sometimes ...
Lets see what characterizes
each presentation,
and what it gave to collectors:
- leaves the sales are flat 150 stamps and gave them vintages, which provides information on the year print. The inscriptions on the lower edge of these leaves are also the current date, month, press, and an initial technician! These inscriptions are on the left or right more often!
Here is a pair with its vintage (1915)
- leaves the rotary sales are 100 stamps and gave the corners dated , always located on the lower right and numbered lower left.
Ah yes ! I forgot to tell you a tour of the printing cylinder gives two sheets of 100 stamps, dated and therefore two different corners. Yes, yes! look carefully: they are different!
- the flat books can sometimes reveal the inscriptions of the lower of original sheet to the left. They include 10, 20, 30 or 40 stamps. They occur with or without advertising on their covers, or margins.
A nice printed book flat, without advertising (type IV)
Here: the left part of a book flat with advertising, showing the date of 29 August ( 1924),
book that was printed on the press 10 under the supervision of Mr. S.
- the rotary books can sometimes reveal a number to the left, and then even a date, right. They are always 20 stamps and are available with or without advertising.
A very rare book with advertising and rotating numbered
(with an insulated box 11: the most discerning will appreciate the rarity, while others will wait ...)
-
leaves the "caster" flat are
150 stamps with their vintages recognizable, and their inscriptions from the bottom sheet.
All vintage topped by two rows of stamps (or more) is from a sheet "wheels" that is why we can recognize them!
- the sheets "wheels" are rotating 100 stamps with their dated corners located on the left margin, as their numbers this time!
-
the bands "casters" , sometimes so rare, are collected by six or eleven stamps (or more), but their rapid identification requires that there be more than five stamps
for printing flat, and over 10
stamps for printing presses. Unless the type is identifiable by unit, which is not often the case, even with a good magnifying glass and the best documentation you can find!
It is a marvel, the rarest of all, and it is accompanied by a guard band which was used to wrap up the coil! NB has the value of a Ferrari, for fans ...
You will understand why 6 or 11 stamps, once you have seen a sales sheet "normal" flat, and a rotary. Indeed, from these "normal" leaves, you can not get + a vertical strip of five stamps for printing flat, and not more than ten stamps for rotary printing, just ...
This piece of sheet "normal" for understanding that we can not draw better than a vertical strip of 5 stamps. On the other hand, there can be only one row of stamps over the vintage.
I warned you that this would be complicated ...
you imagine all that we can have fun collecting: what to occupy a lifetime!
Especially since each stage of manufacture may be malfunctioning, and be the cause of beautiful varieties, much appreciated by fans.
For those interested in the stamps of wheels: will amaze you and enjoy the erudition of a specialist:
http://http://philatelie-roulette.blogspot.com/