Queensland `specimen`?? ID

Is there a way to tell if a `Specimen` overprint is fake or real? Measuring??
This one has no gum, and according Y&T this is Y&T #52 (1888-1892 issue).How does a `Specimen` overprint affects CV?

Dash it!
I saw one at auction just a few days ago Wadmalatz,
I cannot recall reserve.
I'll have a kick around my old haunts.
I do not know of a source of pre federation specimen opts

If you Google... Queensland Specimen Stamps
you'll find discussion

The overprint looks genuine, from the few I have seen, but I am no authority.

Thanks Rod, after Google-ing by these key words, queries took me here:
http://queensland2sideface.blogspot...ncelled.html

And I`ve learned that this is a :`Queensland 2nd Sideface`....
Here`s a 2007 discussion
http://www.stampboards.com/viewtopi...?f=10&t=3385
the final conclusion is that overprinting of Specimen stamps took place in Australia prior to 1913.
~I do not know of a source of pre federation specimen opts~

a gentleman named Robson Lowe is mentioned frequently (and Samuels: Specimen Stamps).
Thanks again, back to find out more.


`
The stamps presented by you were estimated at 250$, guess the whole stock-card...

Robson Lowe is so esteemed, it is rarified atmosphere Wadmalatz.
I believe SCF member Tony Mac, has some productions.
I hope to own some, one day.