I found these looking through my coins last night. I think the Colombian one is pretty common. The doubling is apparent especially with the six and 9. Sorry about the bad pics. I'm not really sure what's going on with the Netherlands coin. I assume it's a DDR. I see it on the 9 and first 7 in the date. I know people might think the whole date or other elements need to be doubled, but isn't this not true in some cases? For instance, you see doubling primarily on one or two digits in the 1962 double die cent from Canada. There's also a British large cent in the early or mid 60s that has doubling on one digit. Lastly, I've seen doubling only on a few stars on a Yugoslav coin. What do you think? Look carefully at the dates
I definitely see the 6 on that beautiful 1964, but the DDR I'm not able to catch anything. Try using two lights at the 10 and 2 o'clock when you take the photo to help reduce glare. Also try to take photos straight on the coin as it makes for a better shot. Please repost when you are able to get those so we can take a look!
