A papercraft display unit comprising two sidewalls each having a rear edge and a front edge, a back wall arranged between the two sidewalls at the respective rear edges, and at least one shelf arranged transversally to said walls (2, 3) and associated therewith so as to be locked in position, said display unit being characterised in that each of said sidewalls comprises, at least at the front edge, three layers (5, 6, 7) of a paper or paper-like material in succession, and precisely, a first layer or outer layer, a second layer or intermediate layer, and a third layer or inner layer, in that said intermediate layer of each of said two sidewalls has at least one intermediate slot, in that said inner layer of each of said two sidewalls has at least one shaped portion (10; 100) in correspondence of said at least one intermediate slot of said intermediate layer, in that said at least one shelf has a front edge comprising two protruding side fins, in that each of said two protruding side fins of said shelf is adapted to be inserted in at least a first portion of the respective intermediate slot obtained in the intermediate layer of the respective sidewall, so that the front edge of the shelf rests laterally at least on a portion of the lower edge of each shaped portion (10; 100) of the inner layer of the respective sidewall, in that said shaped portion is an inner slot, in that said at least one lower edge portion of said inner slot is coplanar with a lower edge portion of said intermediate slot, so that at least a portion of said protruding side fins rests at least on a portion of both said lower edges (34, 35), in that said sidewalls are configured so as to facilitate the insertion of said shelf into said inner slot and intermediate slot with a lateral movement from a substantially open position, wherein said sidewalls are substantially coplanar with a said back wall, to a final position wherein said sidewalls are substantially transversal to said back wall, in that said inner layer of each sidewall comprises at least one inner fin for each shelf, said at least one inner fin comprising a terminal portion, and in that said at least one shelf is formed by at least two layers of a paper or paper-like material, said terminal portion of said at least one inner fin being inserted inside the space between said at least two layers. each of said sidewalls comprises, at least at the front edge, three layers (5, 6, 7) of a paper or paper-like material in succession, and precisely, a first layer or outer layer, a second layer or intermediate layer, and a third layer or inner layer, in that said intermediate layer of each of said two sidewalls has at least one intermediate slot, in that said inner layer of each of said two sidewalls has at least one shaped portion (10; 100) in correspondence of said at least one intermediate slot of said intermediate layer, in that said at least one shelf has a front edge comprising two protruding side fins, in that each of said two protruding side fins of said shelf is adapted to be inserted in at least a first portion of the respective intermediate slot obtained in the intermediate layer of the respective sidewall, so that the front edge of the shelf rests laterally at least on a portion of the lower edge of each shaped portion (10; 100) of the inner layer of the respective sidewall,