Sd7

Here's SD7 and nice obverse

hey! you are learning all the terms really fast...

At the risk of revealing my ignorance, what is SD7?

Nice looking piece here -- two postmarks -- one at 6PM in Fulton and the next at 3AM, 120 miles away. Probably made it to Webster Grove in time for morning coffee...

special delivery scott #7

Two old covers posted today in SCF.
Both addressed to a family Farnsworth :)

That is kind of what I thought, though I have seen this stamp listed as E14 (unless there are other printings/versions out there). Are E stamps and SD stamps the same? I should probably just get a copy of Scott from the library and do some reading.

Found this one in a pile that I bought at face-value on ebay:

That US duplex is the first sighting of a zero
in the footprint.

SD# is the illustration number for special delivery stamps.

E# is the actual Scott number for the special delivery stamps. This is the number that is usually given, although providing the illustration number is useful if you aren't sure of the actual stamp ID.

So this thread should be called SD14? The E7 is the Helmet of Mercury?

E7 (Helmet of Mercury) is an unrelated stamp.

SD7 is a correct thread title, as that is the Scott illustration number of the post office truck special delivery stamps. For Scott illustration SD7, there are 2 Scott listed stamps -- E14 and E19.

E14 is perf 11 all the way around.
E19 is perf 11x10.5.

It's hard to tell exactly because of the size of your scan, but it appears that your stamp is perf 11x10.5. The postmark date is after E19 was issued, so that is consistent. Measure the perf yourself to make the final ID.

[EDIT: this post was in regards to Bfranton's stamp on cover]

For that, I would need a gauge, which will be purchased when the value of a stamp in question outweighs the cost of the gauge.

Gaff, my above post was in regards to Bfranton's stamp on cover. Sorry for the confusion.

Your stamp appears to be perf 11x10.5, which would make it E19. But again, that's eyeballing it.

You do not need to buy a perforation gauge. All you need is an accurate millimeter ruler.

BeeSee posted this simple method --

guys... a simple 1 or 2 dollar ruler will help you in measuring...
as for B.. she does have a habit of posting the secondary or Illustration number, instead of the actual Scott number..
In all honesty, I only record the Illustration number of foreign stamps.. like Italy-- 123-B170 or something like that.
Only because some countries use the same number but different secondary (in the Scott WW)