HERB WAHL'S 40TH ANNIVERSARY BROWN JR. MODEL AIRPLANE ENGINE, LOT OF TWO, each cylinder case and boss each impressed "40TH ANNIVERSARY BROWN JR", timer handles impressed "ANNIVERSARY BROWN", crankcase ends impressed "AUTHORIZED BY BILL BROWN / MADE BY HERB WAHL", flat-top cylinder heads, colorless plastic fuel tanks with decal for "40th ANNIVERSARY BROWN JR.", mounting brackets impressed with SN "208" and remaining with "334", each fitted with a 40th Anniversary Brown Jr. spark plug. Each fitted in a corrugated box with accompanying information, each retains original paperwork including Certificate of Authenticity with corresponding serial number and signed by Bill Brown, and a needle valve tension spring, engine support tray with hand signature by H Wahl and with handwritten corresponding serial number and "Test Runs OK / N/V@ 4 Turns" on serial number 334 and "Test Runs OK / N/V@ 4 1/4" on serial number 208 example. Each example's crankshaft is frozen and each is untested for functionality. 1975. 4 1/2" x 5" overall.
Literature: Dannels - American Model Engine Encyclopedia, p. 112, fig. 5.
Provenance: From the collection of Fred Kaiser, East Sandwich, MA.