The Two titles I offer today are both very rare listed by the ISTC in two locations In the Us and No Locations in the UK

466J Balthasar de Porta (fl. 1487- 1499)

466J Balthasar de Porta (fl. 1487- 1499)  

Expositio Canonis Missae. (Canon sacratissime misse: unacum expositione eiusdem: ubi in primis premittit pulchra contemplatio ante missam habenda de christi pulcritudine. Et quo mo[d] ipsa in sua passione: ab eo o[mn]ino fuerat ablata.  Qualiterque quilibet celebrans debeat esse dispositius incipit foeliciter.)

[Leipzig : Gregorius Böttiger (aka Werman), about 1495.              Price: $9,700 £7,000 €8,700

Chancery half-sheet Quarto: 18.5 x12.5 cm. Signatures: aa-dd6, 24 of 24 leaves. Editio princeps, text in gothic letter, including a set of large caps, large woodcut initial and display face on title page, long list in a contemporary hand beneath printed title; This copy is bound in antique parchment . Book plate of Milton S. Ross ca.1958, (Swann Galleries saleNº 379, lot 202. April 15th 1954.

Balthasar de Porta’s Canon Missae, also contains the proposal of the Exposition of the Eucharist before the celebration of mass . This commentary on the Mass, has verses taken from the Jesuida of Hieronymus de Vallibus, which are used in the appropriate context to illustrate or emphasize the author’s meaning. We know very few facts about the life of Balthasar de Porta , a Cistercian monk who served as Provisor at the order’s College (Saint Bernard) at Leipzig until about 1499. In the same years, he also published another work about Mass, the Expositio mysteriorum missae (Leipzig: Kacheloven, 1494) and a work on the heretical Bohemian Brethren, Conclusiones contra quorundam Bohemorum errores (Lepzig: Böttiger, about 1494), in which Balthasar refutes specific “errors” of the Hussite beliefs.   Balthasar de Porta was Provisor of the Cistercian College of St. Bernhard in Leipzig (fl. 1487-1499).

Goff B39; H 2345*; GfT GfT: Gesellschaft für Typenkunde des XV. Jahrhunderts. Veröffentlichungen. 33 parts. Leipzig [etc], 1907-39. 521, 522; Pell 1753; BSB-Ink B-25; GW 3216; ISTC ib00039000. US copies: Huntington Library (2), Southern Methodist Univ, Yale University  https://data.cerl.org/istc/ib00039000

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II

TWO:

448J. Jacobus de Gruytrode

Lavacrum conciencie [sic] omnibus sacerdotibus perutile

Lyptzck [Leipzig] : Gregor Böttiger, 1495.             Price $10,000 £ 7,300 € 8,900

Quarto  12 x 9 cm. Signatures: a8 b-pq8.[Errors in foliation: lxxxviiii-xcviii foliated xc-xcviiii, with xc as cxi, xciiii as cxv]  Blank initial spaces. Bound in half leather of the 19th century, with quite a bit contemporary marginalia.

This “Washing of the Conscience” is filled with morally instructive stories intended to keep priests faithful to their vows and safe from worldly temptations, lest they suffer the “harshest punishments” of hell. In this work he tries in numerous moral and instructive stories to prove the nullity of worldly joys.

   Born in Gruitrode ca. 1400-10, Jacobus van Eertwach was a Carthusian monk who served as an abbot of the prior of the Liege from 1440 until his death in 1475, during which time he produced numerous works of spiritual guidance for both clergy and laypersons.  This treatise against immorality, especially the priests, which was first published in Nuremberg around 1488 and was attributed to Charterhouse, who died in 1482, with short stories and some German proverbs (e.g. on page XIIIv  On women and on “wein mag nyemant frolich gesein “ 

Although today the work is generally attributed to the Carthusian monk of German origin, Jacob von Gruytrode.     According to Theodor Petreius, Bibliotheca Cartusiana (Cologne, 1609), the actual author is Johannes Meskirchius  (Messkirch, d. 1511), a monk at the charterhouse of Güterstein near Stuttgart (for Messkirch see R. Deigendesch, ‘Bücher und ihre Schenker – Die Bücherlisten der Kartause Güterstein in Württemberg’, in S. Lorenz, ed., Bücher, Bibliotheken und Schriftkultur der Kartäuser. Festgabe zum 65. Geburtstag von Edward Potkowski, Stuttgart 2002, pp. 93-115. BMC assigns authorship to Jacobus de Gruytrode

ISTC il00099000  Goff L99; IBP 3382; Madsen 2157; Voull(B) 1383; Günt(L) 1205; Hubay(Würzburg) 1187; Pad-Ink 375; Wilhelmi 387; BSB-Ink L-71.050; GW 1388; 

Not in Hain, BMC, STC et c.

Two US Copies :  

Library of Congress 

and U Cal Law library.  https://data.cerl.org/istc/il00099000