Peru SC 33 Or 34 Or Counterfeit?

I would appreciate opinions on the color of the overprint on the stamp below. To me it appears to be greyish-black which implies some blue in the ink and it is the blue overprint, if genuine.

Then there is the possibility that it is a counterfeiting attempt to make it appear to be the higher valued black overprint.

The only examples I have to compare it to are on the APS stamp store and the "blue" overprint is not clearly struck. In looking at the APS black overprint, several of the letters are different than those in my example, which leads me to believe mine may be a counterfeit.

Don

FORGERY---done with a rubber stamp .

I thought so! Thanks, Floortrader, for the opinion and the example you posted, which looks like the blue overprint, Sc 33.

The diagonal bars of the "n's" and the top bar of the T in my stamp are clearly not the same as in the example you posted.

Don

I believe that is too is a rubber stamp forgery, but a second opinion would be nice.

Thanks.