You can probably pick these up online if you're in Thailand. Do you have a local version of ebay? I'm in NZ and was able to buy some off of Trademe (NZ ebay clone).
Please help, I'm missing any photos associated with this post. Lmpetersen appears to know which coins you are inquiring about, yet there are no links to a Numista entry. What I'm I missing? Certain common North Korean issues are always available on eBay.
In general, the easiest way to buy NK coins is to buy from Chinese dealers. But so far I haven't been able to find these two series neither on eBay, nor Taobao.
I was just wondering where you could buy them. But, isn't it illegal to take money out of Korea(Communist side)? I did find that you could be permitted to take the older sets out.
These days (since COVID), it is said that North Korea has tightened its regulations so much that secretly crossing the China–North Korea border has become very difficult. In the past, many residents reportedly bribed border soldiers and traveled back and forth to China to buy and sell goods, and it was common enough for some people to make a living from it. However, now it is said that if people are caught, it is very difficult for them to avoid execution by shooting. (This is based on what I became aware of / understood last year, so the situation may be different now.)
Even I have been looking for the set. was not available in Bangkok or London. Will try in Hong Kong during my next visit.
I've been trying to search such set even I asked coin sellers nor North Korean item dealers which located near the NK border in China. They don't even know the set existed. So I don't expect there will be any available.