Yarwell, John, 1690 c.10
Coll. Willach, Taegerwilen, Switzerland
RW 143 [26143] [2013 11] [2023]

Unknown, 1700 c.
Coll. Willach, Taegerwilen, Switzerland
RW 142 [26142] [2013 16] [2023]

[Le Pere, George]
Coll. Willach, Taegerwilen, Switzerland
RW 133 [26133] [2013 05] [2023]

Unknown, 1650 c.+25
Coll. Willach, Taegerwilen, Switzerland
RW 132 [26132] [2014] [2023]

Unknown, 1675 c.25
Coll. Willach, Taegerwilen, Switzerland
RW 127 [26127] [] [2023]

Ayscough, 1755 c.
Coll. Willach, Taegerwilen, Switzerland
RW 125 [41] [2006 10 2008 27]] [2023]

Dollond, 1758 c.
Coll. Willach, Taegerwilen, Switzerland
RW 121 [67] [2006 13] [2023]

Semitecolo, 1750 c.
Coll. Willach, Taegerwilen, Switzerland
RW 119 [21] [2006 68] [2023]

Unknown, 1770 c.
Coll. Willach, Taegerwilen, Switzerland
RW 117 [33] [??] [2023]

Loft, Mathew, 1740 c.
Coll. Willach, Taegerwilen, Switzerland
RW 107 [52] [2006 28] [2023]

Loft, Matt, 1725 c.+25
Coll. Willach, Taegerwilen, Switzerland
RW 107 [48] [2005 31] [2023]

Unknown, 1650 c.
Coll. Willach, Taegerwilen, Switzerland
RW 102 [16102] [2013 06] [2023]]

Du Jardin, Pierre, 1620 c.
Coll. Willach, Taegerwilen, Switzerland
RW 099 [1699] [lots] [2023]

Dolci, 1780 c.
Coll. Willach, Taegerwilen, Switzerland
RW 098 [5] [2006 69] [2023]

Unknown
Coll. Willach, Taegerwilen, Switzerland
RW 092 [26] [2006 55] [2023]

Louis Mesnard, 1690 c.
Coll. Willach, Taegerwilen, Switzerland
RW 080 [17] [2006 62] [2023]

Le Pere, George, 1744
Coll. Willach, Taegerwilen, Switzerland
RW 079 [14] [2006] [2023]

Unknown, 1680 c.
Coll. Willach, Taegerwilen, Switzerland
RW 077 [29] [2006 58] [2023]

Unknown, 1740 c.
Coll. Willach, Taegerwilen, Switzerland
RW 076 [69] [2006 [7] [2023]

Gilbert, J.
Coll. Willach, Taegerwilen, Switzerland
RW 071 [12] [2006 43a] [2023]

Unknown, 1675 c.25
Coll. Willach, Taegerwilen, Switzerland
RW 070 [2670] [2013 18] [2023]

Dollond, 1766 c.
Coll. Willach, Taegerwilen, Switzerland
RW 067 [56] [2006 16] [2023]

Unknown, 1690 c.+10
Coll. Willach, Taegerwilen, Switzerland
RW 062 [28] [2006 56] [2023]

Short, James, 1734
Coll. Willach, Taegerwilen, Switzerland
RW 061 [73] [] [2023]

Ayscough, 1756 c.
Coll. Willach, Taegerwilen, Switzerland
RW 060? [2] [2006 02] [2023]

Ayscough, 1756 c.
Coll. Willach, Taegerwilen, Switzerland
RW 060 [1] [2006 2] [2023]

Baillou, Francois, 1745
Coll. Willach, Taegerwilen, Switzerland
RW 059 [42] [2005 25] [2023]

Vesdy, 1680 c.+20
Coll. Willach, Taegerwilen, Switzerland
RW 057 [2657] [2013 12] [2023]

Mesnard
Coll. Willach, Taegerwilen, Switzerland
RW 052? [70] [2006 61] [2023]

Campani, Giuseppe, 1665 c.
Coll. Willach, Taegerwilen, Switzerland
RW 051 [2651] [only 1] [2023]

Dollond
Coll. Willach, Taegerwilen, Switzerland
RW 050? [10] [2006 17] [2023]

Unknown, 1725 at earliest
Coll. Willach, Taegerwilen, Switzerland
RW 048 [1748] [2013 20] [2023]

Unknown, 1680 c.10
Coll. Willach, Taegerwilen, Switzerland
RW 042 [2642] [2013 14] [2023]

Patroni, Pierre, 1720 c.
Coll. Willach, Taegerwilen, Switzerland
RW 041 [57] [2008 10] [2023]

Ayscough, James, 1754
Coll. Willach, Taegerwilen, Switzerland
RW 036 [40] [2023 04] [2023]

Mesnard
Coll. Willach, Taegerwilen, Switzerland
RW 029 [71] [2006 60] [2023]

Unknown, 1680 c.
Coll. Willach, Taegerwilen, Switzerland
RW 022 [35] [2006 59 2013 01] [2023]

Bourgeois, Jacques, 1680 c.
Coll. Willach, Taegerwilen, Switzerland
RW 022 [2622] [] [2023]

Gonichon, 1770 c.+10
Coll. Willach, Taegerwilen, Switzerland
RW 020 [13] [2006 39] [2023]

Dollond / Linnell
Coll. Willach, Taegerwilen, Switzerland
RW 019 [34] [2006 15] [2023]

Linnell, J.
Coll. Willach, Taegerwilen, Switzerland
RW 019 [15] [2006 04] [2023]

Unknown, 1715 c.
Coll. Willach, Taegerwilen, Switzerland
RW 014 [1714 32] [2006 65] [2023]

Unknown, 1675 c.
Museum Lüneburg, Lüneburg, Germany
R. 1053

Unknown, 1640 c.10
Museum Lüneburg, Lüneburg, Germany
R. 1052 Ritter

Dollond
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
PL.4

Campani, Giuseppe
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
PL.22

Rossin
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
PL.18

Watkins, Unconfirmed
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
PL.10

Marshall, John
Louwman Collection of Historic Telescopes, Wassenaar, The Netherlands
PL. 8

Unknown, 1650 c.
Museum of the University of St Andrews, St Andrews, Scotland
PH210