US Scott 443 Washington 1c Line Single?

Looks to me like Scott #443 line-single… Opinions welcome. Thanks for looking!

What I see is the cancel true the paper , you need watermark fluid to see the watermark ( on those US one at least )

@area66 Thanks! I'll go buy some watermark fluid this week

The stamp is a rotary press horizontal coil most likely a Scott 490 or 452 if watermarked. Ink smears around the joint line indicate that the pair is a rotary press product. Also, the overall aspect ratio (wide) and general appearance is that of a rotary press printing. Also, rotary press horizontal coil watermarks are vertical (sideways to the design).

Jonathan, if you don't have a stamp shop around you can buy Ronsonol lighter fluid and beside it cost way less

Hi - is there a difference between Ronsonol "Lighter Fuel" and "Lighter Fluid"?

hummmmm I made a mistake, on my bottle it said Ronsonol Lighter Fuel, but the fluid also exist, my guess it's depend on witch country it's distributed, the fluid seem an European thing. I think Zippo purchase them, did they change the formula , I don't know.

Among the old time NYC stamp dealers, Zippo was preferred as it has/had less aromatics in the fluid. That being said Zippo is just about impossible to find anywhere but a smoke shop (and those are dying fast). Walgreens normally carries Ronsonol. CVS does not as it has nothing to do with smoking products. I also agree that the stamp in question is either 452 or 490, it is a rotary printing.

It does not have to become a watermark detecting thread (there was one some weeks ago), but then if it's about aromatics, I wonder again why in the US you don't use just the "wash petrol / benzine / gasoline / fuel". I get it at the pharmacy and it works fine. It has no aromatics or additives at all. It's just pure. And it has not (so much) the bad fumes like the benzine from the gas station. I will try Ronsonol (that's why I asked above) and will see which works better on US stamps.

You can still find the Zippo brand in many places like Bass pro shops or even Amazon

https://www.amazon.com/dp/B000K2U3J...U3JG4998341/

@cfrphoto It's apparent details are what count in philately—but first you gotta know what to look for… Thanks for the detailed reply!

@everyone Thanks for the informative comments! I look forward to learning how to identify watermarks with fluid and tray.

I would recommend starting with British Commonwealth watermarks. They are much easier to see, often without fluid. And unlike US stamps they are typically orientated in only one way. Once you get proficient with watermarking these, move on to the frustrating watermarks on US stamps. A find that a glass of single malt Scotch like Glenfiddich often helps.
Don

Quoted for truth. I used to have hair prior to trying to find US Washington / Franklin watermarks.......

I'm a big fan of collecting imperforate and unwatermarked used stamps, or unused stamps with no gum.

@51studebaker sounds like a solid two-pronged strategy; or should I say, a two liquids strategy— one for me, one for the stamps… Will gladly do. Thanks for that!

Could be called a "two-tonged strategy" if you lose you stamp tongs after the first glass of Scotch and have to reach for a second one…