Constantine
Professional Appraisal​
The value of art and antiques evolves with time, scholarship, and market context. A professional appraisal ensures your collection is understood, protected, and positioned with precision. Constantine provides discreet, institution-grade valuations grounded in expertise, research, and global market insight. To obtain an updated and authoritative valuation,
Contact us to schedule a private expert visit.
Consultancy
We build collections with precision and discretion, sourcing exceptional works from leading markets, private collections, and institutions across the world. Every acquisition is guided by scholarship, market intelligence, and long-term cultural value. Our services are offered exclusively to a select circle of private collectors and museums, ensuring focus, confidentiality, and uncompromising standards.
Investment
Fine art is one of the most refined forms of investment—combining cultural significance with long-term financial strength. When carefully selected, art preserves value across generations and performs independently of traditional markets. Constantine advises a select circle of collectors and institutions on strategic art investment.
Through rigorous research, global sourcing, and market intelligence, we curate collections with both scholarly importance and strong appreciation potential. Art, guided by expertise, becomes not only an asset but a legacy. To begin, contact Constantine and schedule a private expert consultation.
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The Creation of Adam - Michelangelo (1508 - 1512)
Auction Service
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Acquisition & Stewardship
Constantine engages in the research, evaluation, and acquisition
of exceptional works of art and antiques through established
international auctions and private channels. Each object is
considered for its historical integrity, material quality, and
place within a broader cultural context.
Acting with discretion, Constantine represents collectors and
institutions throughout the acquisition process, from scholarly assessment
to secure transfer. Engagements are conducted privately, with careful attention
to confidentiality and institutional standards. The focus remains on works of lasting
significance—objects selected not for immediacy, but for enduring relevance and responsible stewardship.
The Incredulity of Saint Thomas
Caravaggio (1601 - 1602)
19th Century KPM Porcelain Vase with Bronze Mounts
Holly Jesus Mosaics ( Byzantine Empire
Constantinople - Turkiye (537 CE)
18th Century George III Paste-Set Ormolu Clock
Membership & Institutional Privilege
Membership with Constantine provides galleries, museums, and private clients access to a discreet framework of art services grounded in scholarship, tradition, and trust. Engagements are conducted with restraint, confidentiality, and respect for institutional standards.
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Members benefit from informed guidance in art investment, auction representation, and private collection exchange, supported by rigorous research and long-term market awareness. Constantine also offers professional appraisal and valuation services aligned with recognized international and regulatory frameworks.
Authentication and certification are carried out through careful examination, comparative study, and documented expertise. All services are delivered in a measured, traditional manner—prioritizing accuracy, discretion, and enduring value over visibility.
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Membership is extended selectively and maintained through longstanding professional relationships, serving those who value careful stewardship of cultural and historical property.