A is for Aden and Z is for Zanzabar

A is for Aden and Z is for Zanzibar... Now what is between? For the world wide classical era philatelist and stamp collector, a country specific philatelic survey is offered by the blog author, Jim Jackson, with two albums: Big Blue, aka Scott International Part 1 (checklists available), and Deep Blue, aka William Steiner's Stamp Album Web PDF pages. In addition, "Bud" offers commentary and a look at his completely filled Big Blue. Interested? So into the Blues...

Monday, October 19, 2020

Bud's L of N Album: Grilled Gum Issues 1930

League of Nations (SdN) Album
8. Grilled Gum Issues, 1930 
(part 8 of a series)

Switzerland began using grilled gum (aka, geriffeltes papier) in 1930 to prevent mint stamps from curling or rolling into annoying tubes.  Most collectors’ albums have smooth gummed stamps that refuse to flatten. The grill, a waffle-like matrix of tiny squares pressed on top of the gum, corrects this problem. It can be best seen on the back of mint stamps with undisturbed grills.

Courvoisier, the printer of many stamps for Switzerland and Liechtenstein, used a gum breaking machine to affix the grills. Sometimes, but not always, the thrust was heavy enough for the grill to be noticeable on the front of stamps and even on used stamps that have been soaked in water.

 Dates and Scott numbers

Scott Catalog lists the grilled SdN stamps with the letter “a” following the number for the corresponding smooth gum types, thereby subordinating them to the earlier stamps. Scott also uses the same system for distinguishing grilled from smooth gum issues for regular issue Swiss stamps. In addition to the eight stamps shown above, grills were also applied to the issue with the Swiss coat of arms over the Matterhorn. See post #9 in this series

Magnification of a grilled stamp

Stamps that might have grills, but are attached covers, present an identification dilemma. If the grill marks are not obvious on the front of the stamp, a restoration specialist might be required to partly detach the stamp for observation. Of the stamps shown in this post, probably only #s 2o17a and 2o23a are valuable enough to warrant seeking a specialist.

Comments appreciated!

No comments:

Post a Comment