I received these as change a couple of months ago when I was in transit at Hong Kong airport. Just checked them now. I'm unfamiliar with Hong Kong currency myself, so can anyone help me?
I have them scanned in 600 ppi, but the file is over 500kb each. They are not rotated, I just suck at scanning them. If you would like to see the ones in full resolution I will upload them in a host and link them here.
A coin I'm sure is real is here, it was minted 1993:

The suspect counterfeit, minted 2012:

You can see how much more worn the 2012 one is. I can see from here, the 2012 coin:
- The three "water drops" before the 港 on the obverse is blurred, especially the third one.
- There are almost no folds on the petals.
- The Chinese characters are barely raised, pay attention to especially the 伍 at the reverse. They are all wider and not as sharp.
- The HONG KONG andFIVE DOLLARS is wider, like it's done in bold lettering. In fact most if not all of the text looks like this.
- The lettering in the groove is the other way and it is not sharp. The spacings are also wrong. I think the wrong spacing is the decisive evidence. I took a couple of photos, but they aren't good.
- The milled edge is thinner and the letters are bigger.
- It is thinner in overall.
The photos. On the left is the 2012, on the right is the 1993.
The spacing in the 2012 one is very large (near twice the 1993 one) and it is shaped oddly, it is the correct shape on the fivE end but it is just a downward slope on the Dollar end. It also has some weird shape of it like it's been chiseled or something.

Well here is a hopefully better photo of that. Look at the groove. Also notice the direction of lettering. The strange shape bit of the 2012 coin is on the same distance as the straight line of the 1993 coin.

Again, the groove. No curved end, just some slope. Notice on the left coin the HONG going down, on the right the HONG going up.

And here is a link to the HK guide of coins, I think it is official:
http://www.hkma.gov.hk/media/eng/do...eaflet_e.pdfSo, is it counterfeit or is it an error? Thanks.
EDIT: Sorry, I posted it in the wrong forum, can a moderator please move it to the correct forum? Thanks.
Moved to World Coins forum - Sap