Martin 000-18
"This guitar was used in Elvis's first gigs in 1954 and recordings. It has a smaller, auditorium body size, similar to the 000-16. Legend has it that the guitar was resold to a Memphis vacuum cleaner salesman days later again for $79.50, later in ‘54.
1942 Martin D-18
Elvis traded his modest 000-18 for a Martin D-18, a classic model. The Martin D-18 Dreadnought Acoustic Guitar is a traditional-style dreadnought that features a rosewood fingerboard and bridge with black binding and pickguard.
The D-18 was used for performing and recording until sometime between June 10 - 18 of 1955. On May 14, 1993 it was sold at auction by Christies in London to Michael Malone for $151,700 who then had it on loan in 1998 to the Rock and Roll Hall of Fame. It is currently on display at the corporate offices of DMX Music, Inc in Seattle, WA."