Questions prior to Seamaster 300 purchase

[greger]

Hello,
I'm interested in a vintage Seamaster 300. Which one of these is the best replica? Are there other, better, models available?

http://www.puretime.co/product/vintage-seamaster-300-ad-circa/
http://www.puretime.co/product/vintage-seamaster-300-royal-navy/
http://www.puretime.co/product/vintage-seamaster-300-date/

I also have two follow-up questions:

• Will there be any problems with shipping to Sweden from Puretime?
• Where can I find nice replacement straps for this watch (mostly looking for leather)?

Thanks in advance,
greger