Online-only auction
The auction will be held exclusively online on 18, 19, 20, 21 November 2025 on our website www.bertolamifineart.cz and on our partner portals Bidinside and OneBid.
18 November 2025, from 1:00 pm CET — lots 1‑455
19 November 2025, from 1:00 pm CET — lots 456‑905
20 November 2025, from 1:00 pm CET — lots 906‑1400
21 November 2025, from 1:00 pm CET — lots 1401-1871
1. How to participate
You may participate in one of the following ways:
- online upon registration on our website bertolamifineart.cz, or on our partner portals Bidinside and OneBid;
- by submitting a written absentee bid.
a. Online
You can participate in real time by registering on our website www.bertolamifineart.cz or on our partner platforms Bidinside and OneBid.
Note: registration on www.bertolamifineart.cz requires users to upload a valid ID. Registration is considered complete only upon receipt of a confirmation email from the auction house.
Assistance
Should you encounter any difficulties completing your registration or if you do not receive the confirmation email, please contact us at:
info@bertolamifineart.cz - +420 774 858 400
b. Absentee
Absentee bids may be submitted by filling out the appropriate absentee bid form, or also by means of a free text. Bids may be sent via e-mail (info@bertolamifineart.cz) by:
- 10:00 am CET on 18 November 2025 for lots 1‑455;
- 10:00 am CET on 19 November 2025 for lots 456-905;
- 10:00 am CET on 20 November 2025 for lots 906-1400;
- 10:00 am CET on 21 November 2025 for lots 1401-1871.
The written absentee bid constitutes authorisation for the auctioneer to place bids on behalf of the signatory.
2. Pre-bidding
Pre‑auction bids may be placed from the publication of the online catalogue until:
- 10:00 am CET on 18 November 2025 for lots 1‑455;
- 10:00 am CET on 19 November 2025 for lots 456-905;
- 10:00 am CET on 20 November 2025 for lots 906-1400;
- 10:00 am CET on 21 November 2025 for lots 1401-1871.
You may:
- place online bids on www.bertolamifineart.cz or via our partner portals Bidinside and OneBid.
- submit absentee bids as outlined in Section 1 b.
The minimum bid for each lot corresponds to the starting price indicated in the online catalogue.
In the event of:
- One single pre-auction bid on a lot
In the absence of additional bids during the auction, the lot will be awarded at the starting price even if the sole bid received is higher (the pre-auction bid represents the maximum amount the bidder is willing to pay).
Example: Starting price € 1,000 – Single pre-auction bid € 1,500 – Lot awarded at € 1,000
- Multiple pre-auction bids of the same amount on the same lot
In the absence of additional bids during the auction, the lot will be awarded to the earlier bidder.
- Multiple pre-auction bids of the same amount on the same lot submitted via different portals
In the absence of additional bids during the auction, if bids of the same amount have been placed through different portals, the lot will be awarded to the bidder who placed the bid on www.bertolamifineart.com, even if this bid was submitted after those placed on the partner portal Bidinside.
- Multiple pre-auction bids of different amounts on the same lot
In the absence of additional bids during the auction, the lot will be awarded to the highest pre-auction bidder. The hammer price will be calculated by adding a predetermined increment, as set out in the table below (Table A), to the amount of the next lowest bid.
Example: Bidder A €1,270, Bidder B €1,800. Bidder B wins, not at €1,800, but at €1,370. The automatic increment of €100 for bids within the €1,000–1,999 range is applied to the immediately lower bid.
3. Payment
Successful bidders may choose from the following payment methods:
- Credit card (Visa, MasterCard, American Express);
- PayPal;
- Bank transfer to: Bertolami Fine Art S.r.o. (for non-EU bank transfers, please add €10 to the total invoice amount);
- Cash (within the legal limit);
- For known clients only: non-transferable bank cheque or banker’s draft payable to Bertolami Fine Art S.r.o. (for foreign cheques, please add €10 to the invoice total)
Settlement of the invoice must be made within five (5) days of its receipt.
Late payment penalty: beginning on the 31st day after the auction, overdue invoices will incur an interest charge of 1% per month on the unpaid balance.
Note:
Invoices paid via cheque, cash, or bank transfer are exempt from administrative fees.
Payments made via credit card and PayPal are subject to additional charges:
Credit card: +1.5%
PayPal: +3.5%
4. Buyer’s Premium
The buyer shall pay Bertolami Fine Arts a buyer’s premium equal to 22% of the hammer price of each lot.
Lots purchased online via on www.bertolamifineart.cz are NOT subject to additional increments.
5. Additional Charges
Shipping costs, any applicable customs duties, and fees associated with the issuance of export permits (such as the Certificate of Free Circulation or other ministerial authorisations) are the sole responsibility of the purchaser.
In the event of unwarranted returns, the buyer shall also bear all resulting customs and shipping costs.
6. Authenticity
Bertolami Fine Art guarantees the authenticity of all coins offered in this auction, in line with its well-established reputation for accuracy and professional integrity. This guarantee is unlimited in duration. In addition, any potential errors in attribution or assessment are covered by a Lloyd’s Errors & Omissions insurance policy.
Certificates of authenticity may be issued upon request for any coin purchased at auction.
Any challenges to authenticity must be accompanied by a detailed report issued by an independent expert of recognised academic or scientific standing, clearly stating the reasons for the assessment and including any relevant diagnostic analysis. Please note that opinions provided by grading companies are not considered valid certification for the purpose of lodging a dispute.
7. Lot Description
Acting as an agent on behalf of the seller, Bertolami Fine Art S.r.o. accepts no responsibility for the origin, descriptions, or valuations of the lots included in the catalogue, condition reports, or any other illustrative material. All such descriptions are purely indicative and should be regarded as the personal opinions of our experts.
8. Terms and Conditions of Sale
The full Terms and Conditions of Sale governing the relationship between Bertolami Fine Art and its clients are published in every catalogue.
Participation in the auction implies full acceptance of these terms, therefore we strongly advise all clients to read them carefully.
In case of any discrepancy between the printed and the online catalogue, the online version shall prevail.
9. Publication of Auction Results
Auction results will be published for information purposes on www.bertolamifineart.cz within ten (10) days of the auction’s conclusion.
TABLE A
AUTOMATIC BIDDING INCREMENTS
| Bid Amount € | Automatic Increment € |
| 0-99 | 5 |
| 100-199 | 10 |
| 200-499 | 20 |
| 500-999 | 50 |
| 1.000-1.999 | 100 |
| 2.000-4.999 | 200 |
| 5.000-9.999 | 500 |
| 10.000-19.999 | 1.000 |
| 20.000-49.999 | 2.000 |
| 50.000+ | 5.000 |