Victor Oxygen Regulator (CSR-450D) w/ Flashback Arrestor

I'm selling an untested Victor Oxygen Regulator (CSR-450D) with Flashback Arrestor. This regulator seems to be in good condition, but please note that I haven't actually used it at all after I bought it used. I do not know how well it functions, and it might have to be rebuilt. • 5-125 psi delivery (indicated by the 'D' in the model number) • Nut is stamped CGA-540 (right-hand thread up to 3000psi) A flashback arrestor is included, although this item has not been tested either. Please note that I’ll only accept payment in person at the time of purchase, and I'm located in Bridgeland, near downtown. Feel free to send me any reasonable offer for the item.