This picture depicts a typical forgery. It was sold on Ebay. The length is 2.3 cm, so it's above the usual average size of original scarabs. The stone seems to be green jasper which is unusual too. The shape is typical New Kingdom , but it's a little bit too flat. The cartouche of Thutmosis III is correct, but the Re sign seems to be drilled, which is unusual. The inscription on the left side says Ntr Nfr (perfect god) a frequent title for Egyptian kings. Below, there should be written Nb t3wj (lord of the two lands) Two bars represent upper and lower Egypt , but there is only one bar. The rest of the inscription makes no sense, possibly the faker tried to copy djt ankh, "eternal life". The Faker just copied some hieroglyphs but did not understand the meaning.
Every collector has to identify fakes. There is a widespread opinion, that nobody can differ fakes from originals. This opinion is wrong. Most fakes are so bad, that everybody can identify them easily. Surprisingly even these fakes are often sold on Ebay for hundreds of US-Dollars. (see menu: Information On Fakes) Buying on Ebay is extremely dangerous for unexperienced collectors. 90% of all "genuine" scarabs, seals, shabtis, faience amulets and statues offered on Ebay are fakes. So before buying, ask somebody, who knows about it or you will lose money ! For examples of real and faked scarabs see Links: "The Fakebusters".
For my black list see:
http://www.seal-collector.de/fakes-on-ebay.html
The following points can help you to identify a fake:
1. Authentic Scarabs always belong to groups. Certain shapes are typical for certain dynasties. Certain inscriptions were issued frequently, these scarabs are often published in books. (see bibliography)
2. Inscriptions were made to be read. Scarabs with obviously meaningless inscriptions are faked. Learning some basic hieroglyphs is useful.
3. 90% of the scarabs measure between 1 and 2 cm. Bigger scarabs are rare.
4. Authentic scarabs are almost always made of steatite or faience. Sacarabs made of metal are very rare. There is an Ebay dealer, who frequently sells gold scarabs. These scarabs are all fakes !
5. Scarabs often were glazed green or blue. In most cases this glaze is gone. Traces of glaze can be an indication for an original but beware: even worn glaze sometimes is faked.
6. Authentic scarabs are often worn and chipped
7. Scarabs with thick dark incrustations are often faked.
8. Scarabs are almost always pierced longitudinally. The holes were drilled from each end. Mostly they did not meet precisely in the center, so there's very often an interruption where the two holes meet.
9. "from an old collection" does not necessarily mean, that an object is authentic. "Certificates of authenticity" are often issued by fraudulent sellers, complete laymen or are even faked.