Matched QUAD 27GB5 Mullard UK Blackburn Power Output Tubes NOS PL500 

New Old Stock - Matching Blackburn Plant Production Codes 't21' over 'B8A2' - For Rogers

Price is per Quad Set (4 Tubes)  - 32 Tubes Available

Bulk Box Stock

Tubes test NOS on B&K Tester and closely Matched.

Ships from Canada 

Tubes will be packed securely and shipped via Canada Post Air Parcel (Canada); USPS Priority (USA); Asendia Global Tracking (Europe / Asia) 

Please email with any questions before bidding.