^Lot 241 Anderson, Greenwood & Co. Production File,

TX. 1982. 3 different certificates. 1) Unique approval model or mockup. Odd shs, blue border. "OK to engrave" stamped on folder and initialed plus an additional alternate vignette on the opposite cover of the folder. Vignette of allegorical man and woman holding globes with hands on large globe. 2) Proof of completed certificate. Odd shs, blue border, printed on white paper. Same vignette as previous. 3) Specimen with logo vignette, odd shs, orange border. 4 LDP's of vignette, text, title, lathework borders and miscellaneous correspondence. Anderson Greenwood began as an airplane manufacturer in 1947, when the first AG-14 plane was produced. In 1957, Anderson Greenwood had developed the first line of pilot operated valves, the Model 23. The company is now the premier pilot-operated safety relief valve company in the world. It is part of tyco International. Unique in archive. SC-USBNC. XF.