cover 'Forwarded by Ramon Leon Sanchez, Cartagena, N.G.', clear dark red oval h.s. used in combination with bold red 'Forwarded by C.J. Fox, Aspinwall, N.G.' oval h.s. on front of 1859 Lanman & Kemp correspondence gray folded letter to N.Y., very fine, scarce Panama forwarder (unlisted in ASCC, but listed in Rowe) especially when used with a second Panama forwarder (possibly a unique combination of forwarders), with 1990 P.F. certificate photo