Martin D-28
Martin D-28 is a dreadnought or model series.
Overview
Steel-string acoustic guitar.
In detail
Martin D-28 is a dreadnought or model series.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Martin D-28”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q3295389: Martin D-28
Consult the source