Spain 1936 Ed 802-813 Forgeries

 Although of relatively low value (for most) this complete series was forged by Segui..

Below FORGERIES LEFT- GENUINE RIGHT

Segui Forgeries

St. Lucia 1860 Forgeries

 Genuine 1860 Issues

Forgeries

Spiro Bros

Note the wide "A" in "POSTAGE" in the above

Oneglia

I believe this is from Oneglia

Unknow forger

Note the low "S" in "St."

 

Forgeries made in India of very poor quality

Possibly Torres based on his 909 cancel

Bosnia Girl 1913

 One of the iconic stamp of Bosnia is the Bosnia Girl. Despite its low value it has at least one forgery.

This image is a photochrom print titled "Girl of Sarajevo, Bosnia, Austro-Hungary," created between approximately 1890 and 1900.

Genuine issue

Forgery

Easily spotted by the crude rendition and the small dash in the frameline..

Denmark 1854 Essay

 This stamp is an essay of Denmark made in 1854.  The colour of this proof is brown (with blue underprint). There also exists another essay with the head of Mercury facing the left.

Genuine Stamps

Forgeries

In both genuine essays, the pearls of the central circle enter the space with "K.G.L." in the forgeries they don't.

This one shows the dividing lines typical of forgeries

Possibly a Torres fabrication

New Caledonia 1859 10c black

 1500 were issued. 

This stamp was seldom used and some specialists question if it was used.
Many forgeries exist. Genuine stamps were printed with black separating lines, and thus only the outside borders can have white margins. 
There are 50 different types of this stamp, so it can easily be identified on the full sheet.

Genuine

This is the original sheet

Position 6

Postion 43

Forgeries

Forgeries have too many white margins

Moens Forgeries

Moens 1864 catalog impressions

Many forgeries were paterned after Moens.

Reprints

Note the title in English instead of French