None. As I also collect only by type, it is going to take me a very long time to get to 1,000 from one country.
If I include all Russian listings as one country, then its 541, but if this is not allowed, then Isle of Man is top with 481.
Still around 30 years of collecting to get my first country with 1,000 coins
I have 1395 Australian coins in my collection (I have a few pre decimal ones but mostly, 98% Decimal).
I also have 1014 USA coins in my collection.
I collect Euros and I know they are lots of different countries but because I collect them as Euro's, I think of them as a particular type of coin and I have 2308 of them.
My other version that I collect is British decimal .. have not got a thousand yet ... only 589.
Mike
Master Referee - See my profile for what I collect.
If we consider Russia as a single country (from Empire time till now) I have more than 1000 coins. I add coins with different mint marks to collection so it is hard to estimate the exact quantity excluding this feature.
The same with Germany. From states time till now (incl. euro) I have more than 3000 coins but it includes coins with different german mint marks (up to 8 for some coins under empire period) and notgelds (less 500).
Less 1000 but more than 800 coins are from Vatican (incl. Papal state) and Australia.