[Amps] Need a replacement choke

[Tom WA9WSJ]

Hello Gents,
By any distant chance, does anyone have a plate choke for an NCL-2000 amp that you might sell?National Pn. B51448. 165 uH 800 ma DC, (so says the manuals parts list).
Mine has not failed, yet. Looks like it got hot and turned color, black. Like to have a spare if it gives up the ghost!
While I'm thinking of it, any spare parts would be great to get also, especially the tubes. 8122.
Thanks!
73 Tom wa9wsj