Or you could tell me where that shop is.......Go buy it, if you have to give them a deposit to hold it I wouldn't let it get away for that price.Holy Cow, that is an outstanding price for any make of Makarov. Go. Go now.
Makarov.com lists all the info you need to know about how to identify which Mak it is:
But don't waste time reading the link, you need to get back to that shop and buy the pistol.