Russia 1735.1737 1/2 Kopek Fake Coins?

I agree the coins are numismatic forgeries. These have been copied in huge numbers and weight is rarely correct. The fonts here are way off and the patina is suspicious.

Check all of the genuine denga and 1/2 denga coins in Heritage auctions and you will not find a match.

You will however find numerous examples of coins with matching fonts on ebay - mostly posted by known sellers of counterfeits from eastern European countries.

I checked the local WCN auction archives.

They are a reputable and well-known auction company and are (or at least were) known for offering many Russian Empire coins. They have an online archive but unfortunately not all lots have images.

The results:

None of the 1735 dengas offered by them even remotely matched your specimen.
As for the 1737, this specimen was the closest I could find:
http://foto.wcn.pl/sklep/full/103983.jpg
Your images while sharp, are too small - and the WCN specimen wasn't in a particularly good condition either so one cannot state anything with certainty but:
- the lettering seems similar both in shape and relative location,
- there are at least several other differences (the circle at the bottom, the leaves on both branches on the right, the top flower looking like a circle, probably much less space between the ornaments at 10 and 2 o'clock).