This is what they say:
Buy our tubes now! www.tubeholland.com
The tubes appearing on this website is a small part of my private tube collection. After more than 35 years, I think it’s about time to gradually reduce my collection. If you are seeking for a lamp / tube that does not appear in the index, please feel free to contact me, perhaps I can provide. If you are interested in one of these tubes or for other questions Please contact me..NEWS on .