Hammond A028 chassis (B3 & C3) complete used pre-amp tube set. The set includes 6AU6 x2, 6C4 x2, 6X4, 12AU7A, 5751 lower noise version of the12AX7, and 12BH7A. Some may be new, just out of their original boxes. If you prefer a new set, checkout my other listings. Please check your tube layout before you buy. All tubes test at 95% or better. 68% is minimum. I will properly pack the tubes for safe shipment and pay insured USPS postage with tracking number in the US. Same business day shipping.  International shipments through eBay Global Shipping for actual postage cost and selling price on customs forms. 8 ounces packed weight for international shipping.