This is a complete used tube set which fits Hallicrafters S38A or B receivers but not the 1946 S38. For S38C/D/E, please check my other listings or contact me. The tube numbers are 12SA7, 12SK7, 12SQ7, 35Z5GT and 50L6GT. Check your tube layout before you buy. Unless you have tube shields, these radios require the enclosed metal 12SA7, 12SK7 and 12SQ7 tubes to eliminate the shields. Shields are used to eliminate the possibility of harmonic feedback sometimes with glass tubes. 35Z5 (rectifier) and 50L6 (power output) tubes are always glass. If you prefer all glass tubes or are using shields, check my other listings. All tubes test 90% or better with 68% being the minimum value. I will properly pack for safe shipment and pay insured USPS shipping with tracking number in the US. Same business day shipping. International shipping through US Postal Service International at actual postage cost and actual selling price on customs forms. 13 ounces packed weight for international shipping.