Please read before buying or bidding.Due to people trying to use tubes for 2 to 3 months and then return them all my tubes will be sold as is for parts.If you have any problem with a tube or tubes I am a honest seller and let me know I will make it wright guaranteed  within 7 days of receiving them!!!! If there is ever a problem do not open a case in ebay just email me I will make it wright now we got that out of the way. I have 50 excellent white tube boxes for 6sn7 7591 5ar4 6sj7 etc tubes  .NO SHIPPING TO CHINA TAIWAN OR ANY PART OF CHINA PERIOD IF BID I WILL CANCEL BID HONG KONG IS OK AND TUBES WILL HAVE FULL VALUE ON CUSTOMS AND BE FULLY INSURED AND PACKED VERY VERY WELL .SORRY NO SHIPPING TO INDONESIA OR MAINLAND CHINA TOO MANY LOST PACKAGES AND PROBLEMS WITH CUSTOMS