i have brought a parker sonnet black silver trim pen from net shop, but i don't know whether it is real. what i doubt is ,the peak reach the first line is 4mm, the first line to the second line is 6mm. i have measured the picture in the net, both of them are nearly the same. i am still doubting,i don't know whether my judgement is true.

The only good way for us to give any useful answer would be if you post some detailed photos of the pen, especially close-up of the nib and cap bands.

Also, whether you can tell us what net shop it was. If its a net shop, it's bound to have pictures and information. It might even be one that is known to some of us here. If there's a major net shop for pens, it is likely we know about it

i am from China, and the net shop is in beijing, maybe not very big. the shop is in www.taobao.com, which is the biggest buy-and-sell market in the net, not in Ebay or others. so i am afraid you don't know the shop . the following is its link:
http://shop33120098.taobao.com/?asker=wangwang
there are many false parker pens in China, and my pen's price is about 20 dollars $.
the following link is about the contrast between the real and the false
http://www.bjparker.com/Html/Apart.asp

for you to understand: 左：left，右：right，假：flase，真：true（given this four keywords' translation,i am sure you can understand the content quitewell）

Thank you

the following pictures are my pen's show, do you think it is true??

It's very hard to tell from those photos. At a glance, it looks like a Sonnet, but I'll leave the final judgment to a better expert.

The Parker logo engraving and nib shape looks a bit fishy...and the price you bought it for has me concerned also.

I agree with Kissing, the nib looks wrong to me and given the price you paid I think that on balance it is most likely a clone.

I have a Parker Sonnet (Chrome) with a steel nib. I must say the pics of the feed look like it is the real deal. The writing (specifically the P logo on the nib) on the nib has me thinking though - looks a little rough.

I will compare your pics with my steel nibbed Sonnet and get back to you.

Your pen seems a fake (not true) to me. I bought one on ebay that turned out to be fake. The barrel impression or engraving of "SONNET" on the cap band is the big give-a-way. The nib does not look correct either. If you have an owner's manual or phamplet that came with the pen and there is no small registered trademark stamp next to "PARKER" on it - it is fake. I have attached a few pics of mine - though I can't get good up-close pics.

Click to view attachment

Click to view attachment

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Maybe these pics help some.

Strange as it may sound, I wouldn't mind getting my hands on one of the clones, just to have one. "This is my 1946 Parker 51, and this is my pure fake Sonnet"

Jinzo - Your Parker Sonnet is an original no doubt, but it is a gold nibbed sonnet. The OP's parker sonnet is one of the Sonnets with steel nibs. Sonnet's gold nibs and steel nibs don't have the same pattern on the nibs.

OP - I wish I could be of more help. I feel you have the real deal, but I can't be 100 % sure. The nib on your pen looks just like the nib on my Chrome Sonnet, but the finish of the nib has me wondering a bit. Perhaps it's just a bad pic?

I would like that to be so - but fear it is not. I have heard from other forum members familiar with the seller I bought from and he apparently is known for selling "clones". No question the copy is good, but.....

If you look close, the nib is buried into the section so deeply (the 18K and 750 is barely visible) you can't get a good look at the trademark Parker stamp on the nib (which is hard to copy I guess). I think pre-inked "dry" weight (no cartridge/no converter) might be a telling factor - I suspect my pen weighs significantly less than a real Sonnet. In reading some articles, I gather the font of the SONNET imprint on the cap band is not reflective of an authentic Sonnet. Maybe others will chime in here...

Assuming Parker uses the same font across all its Sonnets, the "S" in "Sonnet" on the original poster's pen looks suspicious. On my Sonnet, the "S" is "tighter". It's a bit hard to explain... if I were to write the letter "S", it'd start at the top right. Looking at that starting point in the OP's photo, draw an imaginary straight line that continues the angle of the S. On the OP's pen, that line intersects the next letter, "O". On my Sonnet, that line will intersect the bottom right line of the same letter, "S".

So on my Sonnet, which I purchased from JM Lewertowski, the starting and ending lines of the "S" end in a more vertical manner, than the OP's pen.

On the other hand, the blue Sonnet, above, correctly reproduces the "S". If it's really a counterfeit Sonnet, it's a more accurate copy than the OP's.

-Mike

Comparing the "5" in "750", my gold nib's "5" differs from the "5" on the blue pen above.

Imagine you're writing the number "5". On the second stroke, you draw vertically down, then create the U shaped loop to finish the stroke. On mine, the start of that loop briefly angles upward, then goes horizontal, then down. On the blue one, the loop immediately starts at a downward angle.

Again, this comparison is only valid if Parker always uses the same font on its modern Sonnets.

-Mike