If no one comes forward, I suggest you search ebay for "job lot valves tubes".
Here's an affordable "Buy it now" selection: https://www.ebay.co.uk/itm/12626054...39jOTc6nppERurNfusZOBQmIc=|tkp:Bk9SR8rRrrnsYw
Here's an affordable "Buy it now" selection: https://www.ebay.co.uk/itm/12626054...39jOTc6nppERurNfusZOBQmIc=|tkp:Bk9SR8rRrrnsYw