TESLA telephone handset receiver (earpiece) capsule, type 4FE 560 01

Object/Artifact

-

Archive of Cuban Socialism

Name/Title

TESLA telephone handset receiver (earpiece) capsule, type "4FE 560 01"

Entry/Object ID

2025.1.149

Description

A small round metal-housed telephone handset capsule. The front is a shallow domed metal housing with a peripheral ring of oval punched sound apertures around a raised central boss embossed "TESLA" with the company logo, encircled by embossed lettering reading "4FE 560 01," "20," and "AU 1." The back is a domed metal cover with three spot-weld dimples and a central recessed terminal (concentric rings around a central contact post) with rust/corrosion at the center, plus light green discoloration; a handwritten purple-ink notation "K4 / V9" appears at the edge. The single central terminal and perforated sound face are consistent with a telephone receiver (earpiece) insert.

Collection

The Cabrera Arús family collection

Acquisition

Accession

2025.1

Made/Created

Manufacturer

TESLA

Place

Country

Czechoslovakia

Region

Eastern Europe

Continent

Europe

Notes

Specific TESLA plant not confirmed (Czechoslovak telephone sets were produced by Tesla Stropkov, among others). Date: circa 1960s–1980s.

Inscription/Signature/Marks

Notes

Front central boss (embossed): "TESLA" with company logo; surrounding lettering "4FE 560 01," "20," "AU 1" (per corrected reading; leading character read as the digit "4"). Back (handwritten, purple ink): "K4 / V9" — collection inventory annotation, not original.

Materials

Material Notes

Materials: Stamped/formed metal housing (nickel-plated steel or similar — tentative); internal magnetic receiver assembly (inferred, not examined); central electrical contact (corroded). Technique: Stamped and formed sheet-metal housing with punched sound apertures; embossed maker/type marking; spot-welded assembly; single central terminal contact.

Condition

Overall Condition

Good

Relationships

Related Places

Place

City

Havana

Country

Cuba

Region

Caribbean, Central America

Notes

use

Place

Country

Czechoslovakia

Region

Eastern Europe

Continent

Europe

Notes

production

Research Notes

Notes

TESLA, Czechoslovak state electronics enterprise. The corrected marking "4FE 560 01" matches the TESLA telephone-insert family (a "4FE 560 01" telephone microphone is documented commercially); the perforated face with a single central terminal indicates the receiver (earpiece) insert. The "4-" prefix is the standardized Czechoslovak/COMECON component code.

Created By

María A. Cabrera Arús

Create Date

March 28, 2026

Updated By

María A. Cabrera Arús

Update Date

June 18, 2026