Tubes Equivalent
 Parker 1/4 OD Tubing UNION TEE Fitting 364PLP-4 NEW US $2.70 
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 274A Sylvania Vintage Tube for U.S. Navy, NOS, Western Electric best equivalent US $200.00
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STC 4242A equivalent to Western Electric 242A 242C tested 100% tube 211 VT4C, RARE & NICE VINTAGE VALVO LK4200 TUBE - equivalent PX25 - TESTED, New straight wand /pipe/tube for Rainbow Rexair vacuum cleaner D2,D3C,D4C,SE, 274A Sylvania Vintage Tube for U.S. Navy, NOS, Western Electric best equivalent, Parker 1/4 OD Tubing UNION TEE Fitting 364PLP-4 NEW , Lot of 2 GE 6135 Vacuum Tubes (6C5 EC90 equivalent), NOS Sylvania * 2050 * Tube (2050A 2050W Equivalent), NOS 1959 RCA * 2050 * Tube (2050A 2050W Equivalent), 6Z7 = 6J7 equivalent electron tubes russian made, One Fully Tested NOS Vacuum Tube 5963 EQUIVALENT 12AU7A,